[BUG][CS 1.6/CZ]: Some weapons skip shot event on certain client fps

[di57inct]

👉👈 Contact Details (optional)

No response

🤔 What happened?

Title. Most noticeable for me at 115 fps on client when shooting m4a1 and ak47.
Server settings that might be related:

sv_minrate 50000.0
sv_maxrate 0.0
sv_maxupdaterate 750.0
sv_minupdaterate 30.0
sv_unlag 1
sys_ticrate 1008.0

Client settings that might be related:

fps_max 115
gl_vsync 1
rate 100000
cl_updaterate 102
cl_cmdrate 120
ex_interp 0.1

Replay.2026-04-10.16-01-51.mp4

Replay.2026-04-10.16-08-15.mp4

Replay.2026-04-10.16-08-28.mp4

⚠️ Meta-information

Servers running on Debian 12.

This seems to be going on since
> ReHLDS version: 3.15.0.879-dev
> Build date: 12:04:39 Oct 20 2025 (4209)
> Build from: https://github.com/rehlds/ReHLDS/commit/07a432c
up to the latest 
> ReHLDS version: 3.15.0.894-dev
> Build date: 18:08:57 Mar 01 2026 (4341)
> Build from: https://github.com/rehlds/ReHLDS/commit/3398e7a

Metamod-r v1.3.0.149, API (5:13)
Metamod-r build: 11:31:17 Apr 23 2024
Metamod-r from: https://github.com/theAsmodai/metamod-r/commit/603a257
Currently loaded plugins:
      description      stat pend  file                      vers             src  load  unload
 [ 1] YaPB             RUN   -    yapb.so                   v4.5.1199        ini  Chlvl ANY  
 [ 2] SafeNameAndChat  RUN   -    SafeNameAndChat.so        v1.1             ini  ANY   ANY  
 [ 3] Reunion          RUN   -    reunion_mm_i386.so        v0.2.0.0         ini  Start Never
 [ 4] HitBox Fix       RUN   -    hitbox_fix_mm_i386.so     v1.1.4           ini  Start ANY  
 [ 5] WHBlocker        RUN   -    whblocker_mm_i386.so      v1.5.697         ini  Chlvl ANY  
 [ 6] AMX Mod X        RUN   -    amxmodx_mm_i386.so        v1.10.0.5467     ini  Start ANY  
 [ 7] Engine           RUN   -    engine_amxx_i386.so       v1.10.0.5467     pl6  ANY   ANY  
 [ 8] FakeMeta         RUN   -    fakemeta_amxx_i386.so     v1.10.0.5467     pl6  ANY   ANY  
 [ 9] CStrike          RUN   -    cstrike_amxx_i386.so      v1.10.0.5467     pl6  ANY   ANY  
 [10] CSX              RUN   -    csx_amxx_i386.so          v1.10.0.5467     pl6  ANY   ANY  
 [11] Ham Sandwich     RUN   -    hamsandwich_amxx_i386.so  v1.10.0.5467     pl6  ANY   ANY  
 [12] GeoIP            RUN   -    geoip_amxx_i386.so        v1.10.0.5467     pl6  ANY   ANY  
 [13] Fun              RUN   -    fun_amxx_i386.so          v1.10.0.5467     pl6  ANY   ANY  
 [14] ReAPI            RUN   -    reapi_amxx_i386.so        v5.26.0.338-dev  pl6  ANY   Never
 [15] MySQL            RUN   -    mysql_amxx_i386.so        v1.10.0.5467     pl6  ANY   ANY  
15 plugins, 15 running

amxx version; amxx plugins
AMX Mod X 1.10.0.5467 (http://www.amxmodx.org)
Authors:
        David "BAILOPAN" Anderson, Pavol "PM OnoTo" Marko
        Felix "SniperBeamer" Geyer, Jonny "Got His Gun" Bergstrom
        Lukasz "SidLuke" Wlasinski, Christian "Basic-Master" Hammacher
        Borja "faluco" Ferrer, Scott "DS" Ehlert
Compiled: Jan 21 2023 20:27:33
Built from: https://github.com/alliedmodders/amxmodx/commit/27f451a
Build ID: 5467:27f451a
Core mode: JIT+ASM32
Currently loaded plugins:
       id  name                    version     author            url                              file         status   
 [  1] 0   Advanced Bans           0.8.1       Exolent                                            advanced_ba  running  
 [  2] 1   Admin Base              1.10.0.546  AMXX Dev Team                                      admin.amxx   running  
 [  3] 2   Admin Commands          1.10.0.546  AMXX Dev Team                                      admincmd.am  running  
 [  4] 3   Admin Help              1.10.0.546  AMXX Dev Team                                      adminhelp.a  running  
 [  5] 4   Slots Reservation       1.10.0.546  AMXX Dev Team                                      adminslots.  running  
 [  6] 5   Multi-Lingual System    1.10.0.546  AMXX Dev Team                                      multilingua  running  
 [  7] 6   Menus Front-End         1.10.0.546  AMXX Dev Team                                      menufront.a  running  
 [  8] 7   Commands Menu           1.10.0.546  AMXX Dev Team                                      cmdmenu.amx  running  
 [  9] 8   Players Menu            1.10.0.546  AMXX Dev Team                                      plmenu_ab_b  running  
 [ 10] 9   Teleport Menu           1.10.0.546  AMXX Dev Team                                      telemenu.am  running  
 [ 11] 10  Maps Menu               1.10.0.546  AMXX Dev Team                                      mapsmenu.am  running  
 [ 12] 11  Plugin Menu             1.10.0.546  AMXX Dev Team                                      pluginmenu.  running  
 [ 13] 12  Anti Flood              1.10.0.546  AMXX Dev Team                                      antiflood.a  running  
 [ 14] 13  Admin Votes             1.10.0.546  AMXX Dev Team                                      adminvote.a  running  
 [ 15] 14  Pause Plugins           1.10.0.546  AMXX Dev Team                                      pausecfg.am  running  
 [ 16] 15  Stats Configuration     1.10.0.546  AMXX Dev Team                                      statscfg.am  running  
 [ 17] 16  Restrict Weapons        1.10.0.546  AMXX Dev Team                                      restmenu.am  running  
 [ 18] 17  StatsX                  1.8.2       AMXX Dev Team [E  unknown                          statsxx.amx  running  
 [ 19] 18  Map Manager: Core       3.3.1       Mistrick                                           map_manager  running  
 [ 20] 19  Map Manager: Scheduler  0.2.4       Mistrick                                           map_manager  running  
 [ 21] 20  Map Manager: Rtv        0.1.5       Mistrick                                           map_manager  running  
 [ 22] 21  Map Manager: Nominatio  0.3.5       Mistrick                                           map_manager  running  
 [ 23] 22  Map Manager: BlockList  0.0.4       Mistrick                                           map_manager  running  
 [ 24] 23  Map Manager: Online so  0.0.4       Mistrick                                           map_manager  running  
 [ 25] 24  Map Manager: Effects    0.1.3       Mistrick                                           map_manager  running  
 [ 26] 25  Map Manager: Informer   0.0.5       Mistrick                                           map_manager  running  
 [ 27] 26  Map Manager: Sounds     0.0.3       Mistrick                                           map_manager  running  
 [ 28] 27  Map Manager: Online ch  1.0.3       Sergey Shorokhov                                   map_manager  running  
 [ 29] 28  D7 (Dis)Connect Messag  1.6.0       D i 5 7 i n c T                                    D7(Dis)conn  running  
 [ 30] 29  D7 Admin free look      0.0.2       D i 5 7 i n c T                                    D7AdminFree  running  
 [ 31] 30  D7 Aim Info             3.0.1       xPaw, D7                                           D7AimInfo.a  running  
 [ 32] 31  D7 Announcer Kills: Do  0.4.2       D i 5 7 i n c T                                    D7Announcer  running  
 [ 33] 32  D7 Bot Gameplay         0.1.9       D7                                                 D7BotGamepl  running  
 [ 34] 33  D7 Bot Quota            0.1.4       D i 5 7 i n c T                                    D7BotQuota.  running  
 [ 35] 34  D7 Camera               0.2.3       XunTric, D i 5 7  unknown                          D7Camera.am  running  
 [ 36] 35  D7 HostName Scroll      0.0.3       D i 5 7 i n c T                                    D7HostNameS  running  
 [ 37] 36  Bomb Spawn HUD          1.2.1       bugsy, hornet, D                                   D7HUDInfoC4  running  
 [ 38] 37  D7 HUD Info Spec        0.0.1       ConnorMcLeod, D7  unknown                          D7HUDInfoSp  debug    
 [ 39] 38  D7 Kill assist          1.1.9       D i 5 7 i n c T,                                   D7KillAssis  running  
 [ 40] 39  D7 nick changer         1.2.3       D i 5 7 i n c T                                    D7NameChang  running  
 [ 41] 40  No Radio Flood          1.1.7       Starsailor, rega                                   D7NoRadioFl  running  
 [ 42] 41  D7 Parachute            0.0.1       D i 5 7 i n c T                                    D7Parachute  running  
 [ 43] 42  D7 Remember weapon sil  0.0.5       D7                                                 D7RememberW  running  
 [ 44] 43  D7 Reset Score          1.0.2       D i 5 7 i n c T                                    D7ResetScor  running  
 [ 45] 44  D7 Reward: Kill         0.0.8       D i 5 7 i n c T                                    D7RewardKil  running  
 [ 46] 45  D7 ReAPI Bot Auth Time  0.0.2       D7                                                 D7REBotAuth  running  
 [ 47] 46  D7 Spawn Features       0.0.3       D i 5 7 i n c T                                    D7SpawnFeat  running  
 [ 48] 47  D7 Tick Rate Optimizer  0.1.0       D7                                                 D7TicRateOp  debug    
 [ 49] 48  D7 Warm & Restart       3.1.5       D i 5 7 i n c T                                    D7WarmResta  debug    
 [ 50] 49  [ZPNM] Anti Spectator   1.0.2       D i 5 7 i n c T   unknown                          zpnm_gp_ant  running  
 [ 51] 50  Advanced Mute           2.1         OciXCrom                                           crx_advmute  running  
 [ 52] 51  OciXCrom's Admin Chat   4.2         OciXCrom                                           crx_adminch  running  
 [ 53] 52  Best Player MOTD        1.2.4       OciXCrom                                           crx_bestpla  running  
 [ 54] 53  CM: Toggle Chat         4.1         OciXCrom                                           crx_chatman  running  
 [ 55] 54  Command Targeting Plus  1.3         OciXCrom                                           crx_cmdtarg  running  
 [ 56] 55  Command Restrictions    2.1         OciXCrom                                           crx_command  running  
 [ 57] 56  Ultimate Fire in the H  2.1         OciXCrom                                           crx_fireint  running  
 [ 58] 57  Game Messages & Sounds  3.0.2       OciXCrom                                           crx_gamemes  running  
 [ 59] 58  GoSpec                  1.2         OciXCrom                                           crx_gospec.  running  
 [ 60] 59  OciXCrom's Rank System  3.15        OciXCrom                                           crx_ranksys  running  
 [ 61] 60  Remove Immunity         1.0         OciXCrom                                           crx_remove_  running  
 [ 62] 61  Spawn Protection        1.1.0       OciXCrom                                           crx_spawn_p  running  
 [ 63] 62  Accuracy Fix            3.0         Numb              unknown                          accuracy_fi  running  
 [ 64] 63  Autoresponder/Advertis  0.5         MaximusBrood                                       ad_manager.  running  
 [ 65] 64  Admin Spectator ESP     1.4_beta    KoST                                               admin_spec_  running  
 [ 66] 65  Advanced Weapon Tracer  1.3.1       ConnorMcLeod      unknown                          advanced_we  running  
 [ 67] 66  CS AFK Manager          1.0.6 (amx  Freeman                                            afk_manager  running  
 [ 68] 67  Auto Join on Connect    0.1         VEN                                                auto_join_o  running  
 [ 69] 68  C4 Drop Fix             1.1         Numb              unknown                          c4_drop_fix  running  
 [ 70] 69  CS:GO Inspect Weapon    5.1.5       hellmonja                                          csgo_inspec  running  
 [ 71] 70  Bomb/Death/CSS Radar    1.2         eDark & Numb      unknown                          css_radar.a  running  
 [ 72] 71  Dead Name Change        0.1         VEN                                                dead_name_c  running  
 [ 73] 72  Fail Spawns Protector   1.2         zmd94                                              fail_spawn_  running  
 [ 74] 73  Flash Remote Control    12.0        OT                                                 flashbang_r  running  
 [ 75] 74  Grenade/C4 Fixes & Hud  1.2         Numb              unknown                          grenade_c4_  running  
 [ 76] 75  Invisible Spectator     0.3         ConnorMcLeod                                       invisible_s  paused   
 [ 77] 76  No See Vars             0.1.0       ConnorMcLeod                                       no_see_vars  running  
 [ 78] 77  Ping Faker              1.6.4       MeRcyLeZZ                                          pingfaker_m  running  
 [ 79] 78  PLUGIN                  VERSION     AUTHOR                                             premiumvip.  running  
 [ 80] 79  Team Balancer           1.8b3       Ptahhotep                                          ptbD7.amxx   running  
 [ 81] 80  Vote Ban for AdvancedB  1.1         Alka                                               voteban_adv  running  
 [ 82] 81  Chat Manager            4.8         OciXCrom                                           crx_chatman  running  
 [ 83] 82  [AMXX] Settings API     1.0         MeRcyLeZZ                                          amx_setting  running  
 [ 84] 83  [CS] Ham Hooks for Bot  1.0         WiLS                                               cs_ham_bots  running  
 [ 85] 84  [CS] Player Models API  1.2.2       WiLS              unknown                          cs_player_m  running  
 [ 86] 85  [CS] Weapon Models API  1.1         WiLS                                               cs_weap_mod  running  
 [ 87] 86  unknown                 unknown     unknown           unknown                          scm_entity_  bad load 
 [ 88] 87  [CS] Team Semiclip      3.3.2       schmurgel1983                                      cs_team_sem  running  
( 87) Load fails: Plugin uses an unknown function (name "scm_load_ini_file") - check your modules.ini.
88 plugins, 86 running

📄 Relevant log output

[that-is-not-great]

sv_minrate 50000.0
sv_maxrate 0.0
sv_maxupdaterate 750.0
sys_ticrate 1008.0

gl_vsync 1

why these weird settings?

[di57inct]

they're not weird. they're proper settings so that the clients and server communicate more often. most players use outdated rates settings so this forces them to have higher ones. tick rate is best to be a multiple of 4 or 8(can't remember). vsync is just on the client side to avoid screen tearing.

[that-is-not-great]

I will reply so nobody copies his settings: updaterate is downloads per second. the default max is 102, he allows 750 (!) thats an insane load on the server. he has no maxrate upper limit (max 100k), again insane load allowed. he has a high minrate 50k but low updaterate 30, makes no sense, nobody plays <60 updaterate. the only thing you force is min rate 50k download but many non steamers (I see you have a .ro server) have low end setups, they need low rates like 25k. much more important are the upload rates and cmdrate, low values cause lagging players. you cannot modify them, so it is better to educate your players to set correct rates

[di57inct]

educating players is not an option, hence the need to force the settings. i admit 750 client inputs to server is a lot, but there are players which can have 500hz monitors and play at 500 fps, which will require cmdrate of 505. i will lower it to maybe 500 or 400 anyway. I haven't set a limit to max rate because it's already capped by the client at 100k(which i use myself). set the low updaterate at 30 because of old builds which a lot of people still probably use and are defaulted at 30, and i read somewhere that if you force the min updaterate higher than they have set it causes issues. if you have better knowledge please recommend me better settings and explain them if you have time. thanks for your reply.

[that-is-not-great]

updaterate is only download, from server to client. it has nothing to do with client inputs or fps. client to server upload is cmdrate. rate is used for both down and up, since valve removed cl_rate. so you must educate players because you cannot force upload settings anymore and cheaters can anyway spoof all values. you cannot rely on client cap limits because attackers will exploit it.
what you read is wrong, there are no issues to force updaterate from 30 to 60 or 100. below 60 is unplayable anyway.

sv_minrate "30000"
sv_maxrate "100000"
sv_minupdaterate "60"
sv_maxupdaterate "102"

this way we allow valve low default settings, 30k and 60 and limit official max values 100k, 102. nobody needs more download data. to limit upload you use sv_rehlds_movecmdrate_xxx or custom fps limiters

[di57inct]

thank you for your time and pacience. will adjust the settings as you recommended.

[di57inct]

settings adjusted, server restarted. problem still persists.

[that-is-not-great]

settings adjusted, server restarted. problem still persists.

these rate settings have nothing to do with the frame skipping

[di57inct]

settings adjusted, server restarted. problem still persists.

these rate settings have nothing to do with the frame skipping

yup, just ruled out the case so everyone knows

[di57inct]

Could this also be related? When moving on ramps, camera verticality stutters.

Replay.2026-04-11.15-18-39.mp4

[that-is-not-great]

Could this also be related? When moving on ramps, camera verticality stutters.

Replay.2026-04-11.15-18-39.mp4

is this the official steam client? did you test this on a clean server? or are you using a custom, modified "remastered" client and ask why things are different than original?

[di57inct]

Could this also be related? When moving on ramps, camera verticality stutters.
Replay.2026-04-11.15-18-39.mp4

is this the official steam client? did you test this on a clean server? or are you using a custom, modified "remastered" client and ask why things are different than original?

tested on original client too both 25th and legacy. servers are legacy and patched with mentioned rehlds versions and i haven't changed anything on them except updating rehlds(they didn't use to do that before). i will try removing metamod and run the server entirely clean and see if it still happens.

[di57inct]

yup, clean hlds + rehlds(i even deleted custom server.cfg) and clean cs from steam. still happens.

25th:

2026-04-11.19-24-36.mp4

legacy:

2026-04-11.19-25-44.mp4