Keyboard Input Causing Frame-time Spikes

[deqlin.duggan]

As soon as I press down more than one key at a time, my frame-time jumps from 8.2ms to 15.3 causing an noticeable stutter every 3-4 seconds. Has nothing to do with mouse polling rate, or CPU bottleneck. Only happens when keys are pressed, whether it's a keyboard or mouse button input. Doesn't happen with any other game.

I can consistently reproduce the issue, as holding down "w" and "d" consistency causes the frame-time jump, while just holding "w" keeps my frame-time at a constant 8.2ms.

I believe this has been an issue since around the Shop Overhaul Update

I'm using MSI Afterburner to capture frame-times
RTX4070
Intel i5 11600K

 

[longlivesand]

I’m having the exact same issue as well.


Any time I press a key or mouse button, my frametime spikes — even though my average FPS is very high. It’s especially noticeable in my 0.1% lows, which drop from 120+ down to around 40 whenever an input is pressed.


It doesn’t happen in other Source 2 or DX12 games, only in Deadlock.


My setup:
• Ryzen 7 5800X3D
• RTX 4080
• 32 GB DDR4-3600


I’ve tried reinstalling, changing USB ports, disabling background apps, testing different polling rates, and switching between Vulkan/DX11 — nothing changes it.