Nov 8 (Kez) update Vulkan fps drops in half game stutters after 25-30 min of gameplay

[dejvuspec]

Your system information

System information: gist
Steam Runtime Diagnostics: https://gist.github.com/dejvuspec/627d66e8137e7128630b92fde096a680

• Have you checked for system updates?: Yes
• Are you using the latest stable video driver available for your system? Yes
• Have you verified the game files?: Yes

Please describe your issue in as much detail as possible:

After recent update Nov 8 (Kez update) after playing for 25-30 mins game fps drops in half and it starts to stutter non stop.
Before that update Dota 2 was running perfectly fine for over 6 months (had similar issue before but it was patched by game).
Restarting game fixes problem but is not accepted solution.
This is recurring bug from before and it's 100% Dota 2 fault.
I don't have any issues with running other games under vulkan being it native or over proton.

Steps for reproducing this issue:

1. Play game for 25-30 mins using Vulkan
2. Fps drops in half and game starts to stutter non stop

[kisak-valve]

Hello @dejvuspec, this issue is already being tracked at ValveSoftware/steam-for-linux#11446. Closing as a duplicate.