P: Healing brush & clone stamp tools lagging

i'm having a similar problem to Andy and Jose, although in my case it's triggered only under specific conditions and doesn't seem to be altered by the ruler trick (other than the overall performance decrease that enabling rulers now instantly inflicts across all program functions)

when using my wacom intuous, the paint tool throws a busy cursor when rapid strokes are combined with rapid pressure variance. i made a video illustrating the problem. sorry for my grumpy tone in it, just a very frustrating problem.

additionally, drawing with the pen seems to cause quicktime's screen recording to glitch out, as seen in the video. no idea what's going on there —it didn't look jumpy when i was actually painting / recording the video. could be related, perhaps mohave changed something with the cursor handling because the "show mouse clicks while recording" function isn't behaving correctly in photoshop either (the circle only appears when the busy cursor is trigged, in fact). note that screen recording works perfectly with all other programs i've tried, only photoshop produces this weirdness and only when using my wacom pen.

Exactly the same happend to me. Hidding the ruler helped to me.

1. Update to Mojave
2. Updated Photoshop
3. Started painting with the brush tool on a simple file with layers
4. The cursor icon switches to the Spinning Wait Cursor while painting for about
5 seconds
6. Happens with both my wacom pen and mouse
7. The brush tool is not lagging when this wait cursor appears.It's annoying and I don't recall this happing ever before the OSX update.All drivers and software is up to date.

Same problem here, spinning progress wheel as I brush, sometimes strokes/drags don't activate. Most noticeable in healing brush, but does the same thing with the move and stamp tool.

Yep, made a huge difference here. I have just tried it very quickly but noticed an improvement! Thanks for the tip!

It makes no difference on my system.

Yeah, strange but true. The lag is terrible but almost goes away completely once the rulers are hidden.

It does not solve it completely but it helps a lot... Thank you.

Thanks, you just saved our workflow! Who would have thought?

I have to say I find EXACTLY the same thing.....hiding the ruler is solving this problem in a very large way!!! THANKS!!!