@sakutatempest Do other Chromium based browsers use the GPU?

So, it turns out Avast had quarrantined a whole bunch of the Roaming files... now that I've debugged and re-installed it seems fine.

@leocg Thank you for the pointer!

Fixed it by enabling "Use hardware acceleration when available" in Opera Settings/system (tried a few steps before that; there are some seemingly overlapping settings for this)

(PS. I get an error trying to reply to your reply posting; hence doing this as reply to my own)

Thanks for the help, but I fixed the problem, apparently the GX Corner had problems during the iniciation and the computer thought it was a huge task, so it kept repeating it endlessly, sorry for taking your time

@matthew-dorota The same here and funny enough is that firstly I suspected Teams (which also freezes and lags). But after I have uninstalled Teams, Opera still works slowly.

@antisocialuser Seems a normal usage for the number of processes running. As your research should already have told, you can use shift+esc to see those processes.

@siliconplains44 On Windows, you can open the internal task manager using shift + esc and see the CPU usage of each process. Don't know what would be the shortcut on Mac.

You can try finding it in the menu, it's under developer.

With the update to the most recent version of Opera (Version 67.0.3575.137) there is no longer any slowdown in the display.

It is possible that in my case this slowdown was linked to a virus detected on my computer: Koiot.gen. I have not found any description of the effects of this virus.

Another possible cause in my case is a bug experienced by several macOS Catalina users, inducing a kernel panic, which would be linked to the [Intel] GPU (Graphics Processing Unit): Constant Kernel Panics – userspace watchdog timeout: no successful checkins from com.apple.WindowServer.