IrisShaders
FPS dropping to unplayable levels after random time in game
What happened?
Identical behavior to https://github.com/IrisShaders/Iris/issues/419 https://spark.lucko.me/Gtz3HaYFK1 It's been happening for some time, I started using Fabric in 1.19 and it's happening to me since then. If anything else is required, like creating a new issue, please let me know. Thank you.
Screenshots
No response
Log output
No response
Minecraft Version
Minecraft 1.20.1
Iris Version
iris-mc1.20.1-1.6.10.jar
Operating System
Windows 10
What is your GPU?
Intel Arc A770
Additional context
No response
Same issue here on Fabric 1.21, I have an Intel Arc A750. This seems to be an issue with Arc GPUs, and someone else reported it on the Intel Arc issue tracker.
I've noticed that after some amount of time (seems to me about 1hr for me) the FPS starts getting unstable, and drops to around 30 fps, and often only does this while looking in a certain direction. Shortly after that it will suddenly drop to ~5-6 fps. If I turn shaders off at that point it will be less bad, about 20-30 fps, but will have horrible stuttering and still be pretty unplayable.
Also, it seems to get set off when the game stops rendering for a short time, like minimizing the window, entering/exiting fullscreen, going through a portal, or going into a different minecraft world. The framerate drops usually after doing one of those things after the game has been running for a while, but sometimes just randomly starts in the middle of normal gameplay.
It is definitely connected to the driver, the card actually started rebooting my PC randomly as of late so I returned it. I now play on integrated GA without shaders and I'm sad.
