Could you point me to workaround for catastrophics Photoshop performance?

Many, many months passed and the problem is still not resolved. I heard it is well known, I often google for any help and I see lots of people reporting same issue.

My question - is there any known workaround?

Currently I use Photoshop 22.2.0 but it was same in previous versions.

I think there was no issue in Photoshop 2019. Should I back to 2019 somehow?

The problem: Photoshop UI works very very very slow. Much slower than even before.

My system: Windows 10 with RTX 2090, 16GB RAM. I usually work on on 6000x4000 image with many layers (photo retouching).

Tested with Wacom Intuos and with mouse.

GPU acceleration in PS is enabled, memory for PS is set for 8000MB, tried to experiment with history/buffer without luck

Examples:

- create curves layer, move point on curve, after a while image is updating smoothly, but usualy it starts without updating for about 0.5 second

- create same curves layer but UNDER other layers, so Photoshop needs more calculations, now when you move your point - nothing is updating smoothly, image changes very slowly - this is typical case for dodge/burn and it was working before!

- change opacity for layer being UNDER another layers - image updates slowly, sometimes the point on opacity is going back to previous position

What exactly Photoshop is currently doing when you change something on bottom of the layer stack? Why it was working fast before? Is there a way to reset some settings to check? Or disable some new feature which takes all the time?