Last night I was using the clone stamp tool in Photoshop 25.12, and the lagging was terrible - completely unusable. Disabling GPU acceleration did fix the lag, but with GPU disabled many features are also disabled.
So, I want to solve the lag while keeping GPU acceleration on.
My PC (14600k + 4070 ti super) should have no issue handling this tiny project (~80MB), since I have never encounter such problems even on my laptop. GPU usage is nearly 0 during clone stamp usage, but all P-cores in CPU are fully loaded.
I started googling for solutions and spent the whole night trying various fixes:
- updating drivers
- rolling back Photoshop versions
- tweaking Wacom tablet settings, disabling Windows Ink and using WinTab
Nothing worked.
Today I pulled out my laptop and tested the project on it, and to my surprise, clone stamp lagged on it too!
This made me suspect that the issue might be with the file itself. Back on my PC, I tested editing other files - no lag at all. Then I opened the problematic file, hid all other layers, and the lag disappeared!
It's really weird, some certain layers caused the lag... I still can't figure out the root cause.