Hmm, I’m not sure!
Do you only get the spikes if the app is pinned, or does it alo occur any time the appimage is run, not from the commandline?
Can you try passing --disable-gpu to the CLI arguments when pinned?
--disable-gpu
Turns out I was incorrect about pinning the app causing issues, creating the pin somehow re-pointed it back to the snap version.
Using the appimage works completely fine.
Okay! Thanks for digging in to that :)