Low FPS from start of match, but fixed by disconnecting and rejoining

[aeodyn0]

When starting a match I'm getting ~140fps, which goes up to ~190fps after disconnecting and rejoining the match. Over the course of a match neither of these rough performance levels change to the other otherwise, and the performance increase persists over restarting the client. This happens on both Linux and Windows, and with both Vulkan and DX11/DXVK.

System specs:
CPU: 7700X
GPU: 6650XT
RAM: 32GB DDR5 @ 6400 MT/s

Stats from starting a bot match in an outer lane, then pausing on the zipline while looking at the teammate outlines through the walls:

DXVK before:
[VProf] Summary of 5348 frames.  (66 frames excluded from analysis.)
[VProf] FPS: Avg=146.8, P1=130.3
[VProf]
[VProf]                       All frames         Active frames   
[VProf]                         Avg    P99        N    Avg    P99
[VProf] -------------------- ------ ------   ------ ------ ------
[VProf]           FrameTotal   6.81   7.68     5348   6.81   7.68
[VProf]     Client Rendering   6.01   7.24     5348   6.01   7.24
[VProf]       Frame Boundary   5.12   5.76     5348   5.12   5.76
[VProf] Present_RenderDevice   3.91   4.71     5348   3.91   4.71
[VProf]           PanoramaUI   0.53   0.84     5348   0.53   0.84
[VProf]    Client Simulation   0.33   0.86     5348   0.33   0.86
[VProf]  ClientSimulateFrame   0.17   0.69     5348   0.17   0.69
[VProf]          Unaccounted   0.16   0.39     5348   0.16   0.39
[VProf]   ClientSimulateTick   0.16   0.68     2187   0.38   0.70
[VProf]           Prediction   0.13   0.56     5348   0.13   0.56
[VProf]           Networking   0.05   0.30     2191   0.13   0.34
[VProf]             Sleeping   0.02   0.23       60   1.52   3.19
[VProf]  Particle Simulation   0.00   0.00        5   0.10   0.34

DXVK after:
[VProf] Summary of 5215 frames.  (195 frames excluded from analysis.)
[VProf] FPS: Avg=176.3, P1=169.0
[VProf]
[VProf]                       All frames         Active frames   
[VProf]                         Avg    P99        N    Avg    P99
[VProf] -------------------- ------ ------   ------ ------ ------
[VProf]           FrameTotal   5.67   5.92     5215   5.67   5.92
[VProf]     Client Rendering   5.07   5.59     5215   5.07   5.59
[VProf]       Frame Boundary   4.28   4.67     5215   4.28   4.67
[VProf] Present_RenderDevice   3.15   3.63     5215   3.15   3.63
[VProf]           PanoramaUI   0.46   0.65     5215   0.46   0.65
[VProf]    Client Simulation   0.25   0.49     5215   0.25   0.49
[VProf]  ClientSimulateFrame   0.14   0.34     5215   0.14   0.34
[VProf]          Unaccounted   0.14   0.35     5215   0.14   0.35
[VProf]   ClientSimulateTick   0.11   0.39     1773   0.32   0.41
[VProf]       SoundOperators   0.00   0.00        6   0.58   1.11

After switching to Vulkan:
[VProf] Summary of 2933 frames.  (804 frames excluded from analysis.)
[VProf] FPS: Avg=197.4, P1=191.1
[VProf]
[VProf]                       All frames         Active frames   
[VProf]                         Avg    P99        N    Avg    P99
[VProf] -------------------- ------ ------   ------ ------ ------
[VProf]           FrameTotal   5.06   5.23     2933   5.06   5.23
[VProf]     Client Rendering   4.48   4.93     2933   4.48   4.93
[VProf]       Frame Boundary   3.57   3.94     2933   3.57   3.94
[VProf] Present_RenderDevice   2.56   2.99     2933   2.56   2.99
[VProf]           PanoramaUI   0.47   0.64     2933   0.47   0.64
[VProf]    Client Simulation   0.25   0.52     2933   0.25   0.52
[VProf]  ClientSimulateFrame   0.14   0.36     2933   0.14   0.36
[VProf]          Unaccounted   0.12   0.39     2933   0.12   0.39
[VProf]   ClientSimulateTick   0.11   0.40      891   0.36   0.42

 

[aeodyn0]

Still an issue as of today, build 5425.

 

[aeodyn0]

Still happening for me as of build 5490: 150 → 196 fps.
Both Windows and Linux, DX11 and Vulkan.

 

[aeodyn0]

Still happening, 149 → 183 fps. The performance increase happens even if the game is left by exiting to desktop.

 

[aeodyn0]

Still happening. Attached are AMD Radeon GPU Profiler captures of before/after quitting to desktop and rejoining; for setup, I created a solo custom match without bots, started it, and paused while on the zipline. If there's anything else I can do troubleshoot, glad to help!