Hitching on steam unless using steam link

[mitocram]

Hello

Ever since a few days ago, I've been having some very weird hitching on Monster Hunter Rise. The hitching has been happening ever since I installed qemu and a kvm windows vm, but that seems to have been a very weird coincidence, as after uninstalling qemu and kvm, the problem persisted. Even across a complete reinstall , which I decided to try as a last ditch effort at trying to revert my system to as clean of a state as possible.

The hitching doesn't seem to have anything to do with frame-rates, which are stable at 60 while locked, and go up well over the 200s when unlocked, as the system which is experiencing all of these issues has an RX7900 GRE gpu, and a Ryzen 7950X3D processor. The hitches are not constant, and tends to happen after the game has been running for a while. I can artificially induce them by moving around through a lot of different areas repeatedly with some consistency, but even then it happens at either a certain location, or only for a short amount of time.

Steam is installed on this system through portage from the steam-overlay, so I decided to emerge flatpak and install Steam from flathub in order to see if my problems lied with steam, as running the game through a Fedora installation I have on a USB drive, with Steam installed through dnf, produced none of the problems I was experiencing. The game runs fine when launched from flathub-steam, but ideally I would like to have all of my packages handled by portage.

While the hitches are very sporadic, they consistently occur when inside a loading screen (noticeable through the jitter of an icon that appears on the bottom right of the screen), and when going through doors; which I've used to check if any of the things I produce some effect.

Among the many shots in the dark I took in order to try and either fix my issue, or at least find a plausible cause for it, I decided to install steam link onto my phone to see if the hitching would also show over the streamed gameplay. And, when I launched the game after connecting the phone to my system, I noticed my loading screens where running smoothly, and I couldn't induce any hitching . This prompted me to try to connect and disconnect my phone from my computer in different situations, and led to the discovery that if I connected with steam link at any point in time while my game was running, all my problems disappeared .

What I would like to know now, is what could Steam Link be doing when it connects, or Steam not doing, that could have such an effect?

If anybody finds any information that could be useful I'd be very grateful, as describing my issue and apparent solution to Google proves to be very challenging

Thanks in advance.

tldr: Monster Hunter Rise hitches, unless using steam from flathub, or connecting to my pc through my phone with Steam Link

[Ralphred]

Sounds like maybe this report might be over the target? https://www.protondb.com/users/2110666334

[mitocram]

[spica]

Do these hitches evolve over a time (weeks, months)? Did you assemble/disassemble hardware recently?

[mitocram]

[Ralphred]

[mitocram]

[Ralphred]

[mitocram]