Photoshop CC 2019 / 2018 problems

Hi photoshopers,

I'm quite new in this forum because since months (and years!) there was no single problem with photoshop..

Until yesterday! Since yesterday a few problems started...

And also since yesterday I updated Photoshop CC 2018 to Photoshop CC 2019. AND I also updated macOS to Mojave (version 10.14).

Yesterday I recognised the problem with the "busy cursor"... while I'm using Healing or Cloning but also Brush and Dodge & Burn..

Sometimes also reaction of brush is crazy slow. Or Cloning, sometimes there's not happening anything when i click. (both tablet or mouse)

This makes me so slow at working with photoshop. And I need photoshop daily. I'm a freelancer and I really need to work with photoshop.

Now I'm trying, I think cloning, D&B, brush and so on are working in PS 2018, but not sure, sometimes there are also lags and busy cursor there.

Today there was something new to me: after I was liquifying an image there were looooots of black and blue pixels in my picture. Especially in that area where I was transforming image. (both 2018 and 2019)

I made a screenshot for you just to show you my problem with actual version of photoshop. (or Mojave, I'm really not sure. Also was trying Photoshop CC 2018, SAME problems.. never had them before)

I'm not sure what the problem is, or which update destroyed the workflow, photoshop or Mojave. Or is it a combination of both?

Working on iMac Retina 5K 27'', ultimo 2014
4 GHz Intel Core i7

16 GB 1600 MHz DDR3

AMD Radeon R9 M290X 2048 MB

with Wacom pro L

Hope somebody can help me!

Best,

Caro