Ryzen 5 1600 (base clock) Super laggy BRUSH - takes minutes to paint (with big brush)

[jiris16954964]

Hello everyone,

wanted to ask a question maybe someone have experienced this. As a working computer at my work i am using intel i7 - 5820K CPU (16gb ram - gtx 1060 6gb) and as far as photoshop basic functionality goes, it is pretty smooth performer. The same brush stroke as the one mentioned bellow does not even slow the PC down, it is just instant.

Altho at home i have Ryzen 5 1600 CPU (16gb ram gtx 1050 4gb) again, as far as photoshop goes it is smooth BUT, using brush, in any form, is just pain. It can literally take up to 3 minutes to finish a single brush stroke (say 2000px big soft brush from up to bottom of the screen over a 4000x4000px canvas), the PC can be normally operated when this brush stroke is being processed, i can watch youtube, browse chrome, open a movie, whatever, in task manager it caps at 40% CPU usage and stays there untill the brush stroke is finished, RAM/GPU/SSD is at idle.

Adobe suite is updated to it's newest versions on both computers

I read that ryzen CPUs are not performing all that good in Adobe programs, but really, this bad?

ANY help or possible solution with my case is highly appreciated.

Thanks everyone.

[JJMack · Accepted solution]

What is you brush spacing set? A canvas sized 4000px square is 16MP. A bursh tip 2000px round is 3.14MP which in RGB mode is 9.4MB. So your Brush stroke is repettivly blending changing 9.4 MB as it traversed your canvas.  Make it a mixer brusg and it will take even longer.   How does the brush perform if you set a tip size to 200px, hardness 100%,  spacing 25% and normal blend mode.

Changing 9,400,000bytes a larger number of times will take most computers time to process.  My workstation has two slow 6 Core 2GHz xeon Processor.  When I use a Brush to stroke over the 4000x4000 canvas with a 2000 px brush I see Photoshop seems to be using six cores on one process there are 12 threads with some load only one thread is pegging at 100%. 12 Threads are idle.  So the 11 threads that are not 100% are most likely slowed down by the tread using 100%.  To speed your stroke up  get the Fastest processor you can with as many cores that you can gets with the highest clock speed you can get.

[jiris16954964]

Hello JJMack, thanks for your reply.

Honestly i did not even know there is spacing option there for the brush in photoshop - i never used it, at work where i am at now is the spacing set to 25% , i tried setting it down to 1% and the difference in performance is noticable - huge i would say, the computer is also not catching up and the 2000 soft brush stroke with 1% spacing is making the computer stuck for good couple of seconds. I have to look and see what spacing on my home computer is at. Then i will update the topic here.

I was aware of photoshop preferring single core max speed CPU rather than more cores / lower speed.

EDIT: so i checked my computer at home and sure it was set to 1% spacing, changed it to 25% and now it runs just great.

Thanks for the help JJMack​