Is there a way to force PS to use more CPU?

Question

Hey all, Is there a way to force PS to use more CPU? Specifically for the brush lag that occurs at higher resolutions.Im not talking about optimizing brush settings or anything else.I know from the tests Ive run that CPU is the main factor, everytime I upgraded CPU in the past I have less brush lag at higher resolutions that prev CPU couldnt handle. However the most recent upgrade from 5800x to 13900k, strangely there was little to no improvement.What I notice is that in task manager, CPU utilization is 5% most of the time and then jumps to 15-20% for a split second during brush usage in other wrods clock speeds are 3ghz then sometimes go to 4.5ghz. However I know the 13900k CPU can go to 5.5 from running a test on diff program. (where it did this perfectly fine)As a result, It really feels like PS is just bottlenecking the 13900k at this point.Is there anyway to make PS utilize more of the CPU?

D Fosse · Answer

I do suspect that this is largely down to the old question: Can two pregnant women give birth to a baby in 4.5 months?

The question is, how slow is it?

I know @Trevor.Dennis has a standardized test. I think it was 30k pixels square, 8 bits, and 5k fully hard brush. And here's the crucial bit: set spacing to 1% (minimum). This will really slow it down.

I get 8.7 seconds from corner to corner, with an i7-11700KF. But in real life, I won't have 1% spacing. I'll have 10 - 20, and then it's a quarter to a half second. I need more time than that to figure out my next move. So I don't really see the problem.

Oh, and the CPU goes to a little over 50% overall:

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