cs2 fps avg drops by 50 after a single match played

[cone16v]

Running counter strike 2 with wayland ( set wayland on line 77 in cs2.sh).

I had terrible frametime issues with this game almost like it always has this disguisting vsync on. Did research and found this command to disable the forced wayland vsync : MESA_VK_WSI_PRESENT_MODE=VK_PRESENT_MODE_IMMEDIATE_KHR

I also had mouse input issues where it feels like i have mouse smoothing on. this fixed it : LD_PRELOAD="/usr/lib/libSDL3.so.0"

My launch options for now : MESA_VK_WSI_PRESENT_MODE=VK_PRESENT_MODE_IMMEDIATE_KHR LD_PRELOAD="/usr/lib/libSDL3.so.0" %command% -nojoy -vulkan -high -forcenovsync -refresh 165 -USEALLAVAILABLECORES -softparticlesdefaultoff

I managed to halve the frametimes from 14ms to 7 ms on avg and my mouse feels normal now.

The issue i have is after one deathmatch game (or any match in general) i lose 40 to 50 avg fps .
i tested this with a workshop benchmark map .

Sometimes after starting the game and immediately running to the benchmark i get 235 avg fps, sometimes 219 avg fps so its even random on startup.

This is 5 seconds in the game running the benchmark :

[VProf]
[VProf] -- Performance report --
[VProf] Summary of 27718 frames and 115 1-second intervals. (1927 frames excluded from analysis.)
[VProf] FPS: Avg=243.1, P1=133.3
[VProf]
[VProf] All frames Active frames 1s max (all) 1s max (active)
[VProf] Avg P99 N Avg P99 P50 P95 N P50 P95
[VProf] ---------------------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
[VProf] FrameTotal 4.11 7.50 27718 4.11 7.50 8.10 13.34 115 8.10 13.34
[VProf] Client Rendering 2.48 4.97 27718 2.48 4.97 3.98 9.40 115 3.98 9.40
[VProf] Frame Boundary 1.74 4.05 27718 1.74 4.05 3.23 8.56 115 3.23 8.56
[VProf] Client Simulation 0.53 1.53 27718 0.53 1.53 1.64 2.28 115 1.64 2.28
[VProf] Server Simulation 0.51 2.33 7292 1.94 2.54 2.55 3.75 115 2.55 3.75
[VProf] Present_RenderDevice 0.50 2.93 27718 0.50 2.93 1.80 5.93 115 1.80 5.93
[VProf] Server Game 0.41 1.97 7292 1.56 2.11 2.06 3.09 115 2.06 3.09
[VProf] ClientSimulateFrame 0.32 0.58 27718 0.32 0.58 0.62 0.83 115 0.62 0.83
[VProf] Prediction 0.24 0.91 27718 0.24 0.91 1.01 1.42 115 1.01 1.42
[VProf] UserCommands 0.21 1.02 7292 0.80 1.28 1.06 1.40 115 1.06 1.40
[VProf] ClientSimulateTick 0.21 1.09 7292 0.79 1.19 1.18 1.65 115 1.18 1.65
[VProf] Unaccounted 0.13 0.36 27718 0.13 0.36 0.38 0.55 115 0.38 0.55
[VProf] PanoramaUI 0.13 0.17 27718 0.13 0.17 0.29 0.54 115 0.29 0.54
[VProf] Client Input/Output 0.11 0.29 27718 0.11 0.29 0.31 0.47 115 0.31 0.47
[VProf] HUD 0.10 0.16 27718 0.10 0.16 0.19 0.45 115 0.19 0.45
[VProf] Client_Animation 0.08 0.49 7292 0.32 0.56 0.54 0.67 115 0.54 0.67
[VProf] Server Animation 0.08 0.39 7292 0.30 0.42 0.38 0.70 115 0.38 0.70
[VProf] NPCs 0.05 0.35 7292 0.20 0.36 0.39 0.79 115 0.39 0.79
[VProf] Server Send Networking 0.05 0.25 7292 0.20 0.36 0.28 0.56 115 0.28 0.56
[VProf] Networking 0.05 0.24 7294 0.19 0.36 0.40 0.69 115 0.40 0.69
[VProf] Server PackEntities 0.04 0.19 7292 0.15 0.23 0.23 0.50 115 0.23 0.50
[VProf] InterpolationLatch 0.04 0.18 7292 0.13 0.32 0.31 0.40 115 0.31 0.40
[VProf] Magic 0.00 0.00 330 0.13 0.37 0.00 0.32 40 0.19 0.41
[VProf] Javascript 0.00 0.00 226 0.09 0.56 0.10 0.22 115 0.10 0.22
[VProf] SoundOperators 0.00 0.00 13 0.23 0.47 0.00 0.24 13 0.19 0.43
[VProf]

Same instance after one deathmatch round :

[VProf] -- Performance report --
[VProf] Summary of 21554 frames and 115 1-second intervals. (1499 frames excluded from analysis.)
[VProf] FPS: Avg=189.6, P1=116.3
[VProf]
[VProf] All frames Active frames 1s max (all) 1s max (active)
[VProf] Avg P99 N Avg P99 P50 P95 N P50 P95
[VProf] ---------------------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
[VProf] FrameTotal 5.27 8.60 21554 5.27 8.60 8.69 13.18 115 8.69 13.18
[VProf] Client Rendering 3.06 5.82 21554 3.06 5.82 6.17 8.48 115 6.17 8.48
[VProf] Frame Boundary 2.31 5.42 21554 2.31 5.42 5.40 7.64 115 5.40 7.64
[VProf] Present_RenderDevice 0.99 3.34 21554 0.99 3.34 3.88 6.00 115 3.88 6.00
[VProf] Server Simulation 0.74 2.62 7269 2.19 2.70 2.72 3.85 115 2.72 3.85
[VProf] Client Simulation 0.69 1.59 21554 0.69 1.59 1.72 2.30 115 1.72 2.30
[VProf] Server Game 0.59 2.07 7269 1.75 2.16 2.20 3.01 115 2.20 3.01
[VProf] ClientSimulateFrame 0.40 0.64 21554 0.40 0.64 0.70 0.83 115 0.70 0.83
[VProf] Prediction 0.38 1.10 21554 0.38 1.10 1.22 1.40 115 1.22 1.40
[VProf] ClientSimulateTick 0.29 1.19 7269 0.86 1.24 1.24 1.63 115 1.24 1.63
[VProf] UserCommands 0.27 1.02 7269 0.81 1.17 1.05 1.34 115 1.05 1.34
[VProf] Interpolation 0.19 0.35 21554 0.19 0.35 0.39 0.59 115 0.39 0.59
[VProf] Client Input/Output 0.15 0.35 21554 0.15 0.35 0.38 0.52 115 0.38 0.52
[VProf] Unaccounted 0.15 0.34 21554 0.15 0.34 0.40 0.61 115 0.40 0.61
[VProf] PanoramaUI 0.14 0.25 21554 0.14 0.25 0.28 0.49 115 0.28 0.49
[VProf] Server Animation 0.13 0.48 7269 0.37 0.52 0.45 0.70 115 0.45 0.70
[VProf] Client_Animation 0.11 0.52 7269 0.34 0.58 0.56 0.76 115 0.56 0.76
[VProf] HUD 0.11 0.17 21554 0.11 0.17 0.19 0.46 115 0.19 0.46
[VProf] Networking 0.10 0.48 7271 0.29 0.65 0.59 0.86 115 0.59 0.86
[VProf] NPCs 0.09 0.31 7269 0.25 0.33 0.33 0.75 115 0.33 0.75
[VProf] Server Send Networking 0.08 0.26 7269 0.22 0.43 0.37 0.64 115 0.37 0.64
[VProf] Server PackEntities 0.06 0.28 7269 0.17 0.37 0.30 0.57 115 0.30 0.57
[VProf] InterpolationLatch 0.05 0.20 7269 0.15 0.35 0.31 0.45 115 0.31 0.45
[VProf] Magic 0.00 0.13 330 0.13 0.32 0.00 0.28 40 0.19 0.34
[VProf] Javascript 0.00 0.04 228 0.08 0.58 0.09 0.22 114 0.09 0.22
[VProf] SoundOperators 0.00 0.00 4 0.22 0.30 0.00 0.00 4 0.22 0.30
[VProf]
[VProf] VProfLite stopped.

Ive done this test countless times with the same result. Its so bad.

ld preload command does nothing and doesnt fix the issue.