Photoshop Constantly lagging

[jeremy chong]

I facing constantly lagging or delay in my Photoshop. been working ever since i change my PC to Mac Mini 2019. everything was very well. until one day 19th Jan 2020, not sure whether Photoshop had updated by itself or not, i just realized my photoshop had been lagging after an hour of use. sometimes it cost delay when i press option key picking color, or using lasso tools,,or sometimes even not responding like it going crash but it comes back to normal after a few minutes later. then repeat the lagging again even though i had to restart my computer. my Mac mini spec is pretty good enough to handle very heavy file, i7 6 core processor, 16GB ram,  but even i work on a small file it also lagging after few hours of use. Adobe please fix it ASAP.

[Warren Heaton]

Yes, Photoshop should run pretty well on your Mac Mini.

Have you had a chance to review the Troubleshooting page for when Photoshop freezes, lags, or is slow?

Photoshop lags, freezes, or runs slowly

https://helpx.adobe.com/photoshop/kb/photoshop-slow-lags.html

Something that's always worth double-checking is your available space on your Macintosh HD (Apple Menu > About This Mac > Storage).   If that gest to be less than 10%, you're very likely to notice a drop in system performance.  I usually try to keep this at 20% free or more.

[jeremy chong]

Hi Warren, Thanks for the reply.

Also thank you for sharing the troubleshooting page.

Honestly, I've been using photoshop for years, kind of familiar to it.

There're still 355GB free space, i pretty sure it shouldn't be a problem to run PS smoothly.

I also set my Photoshop memory usage to let photoshop use 85%.

even set my graphics processor setting to most basic, only tick openCL and 30 bit display.

It was running smoothly all the time until 19th Jan, i not so sure about whether it has updated itself since I've turned on the update automatically, then the problem starts to come in. freezes, and lags.

I even try the downgrade PS v20.0.8 , and tried out the new 2020 which is the v21.0.3, both have the same result.

At first, I thought it could be the Wacom tablet driver problem, so I update and re-installed. but it hasn't changed anything, then re-installed the old driver version, still hasn't changed anything. 

Also, one weird error that i have never discovered before which is the ( Save For Web ). it always show up this message

Do you have any solution for this?