HELP - Photoshop freezes ENTIRE PC randomly after a few minutes of usage

Hi,

I have a pretty big problem that makes working impossible for me atm. I need help asap, otherwise I'm loosing way too much time for my current projects.

My problem:

Photoshop just freezes my entire PC after a few minutes (sometimes after 1min of using it, sometimes after 20min, doesn't matter what I'm currently doing in PS) indefinitely. I cannot move my mouse, my keyboard is not responding, my screens are completely frozen. No errors or anything, it just freezes. 

I have tried to update all my drivers, tried to reinstall PS, to clean all my preferences, change scratch disk, lower the RAM it's allowed to use to 20%, to update to the newest PS version, nothing.

This has only been happening for the last few weeks!

The only explanation I could give myself is, that I updated from 16GB to 32GB RAM, but no other program (e.g. Substance Painter or After Effects, that use A LOT more RAM) have ANY problems.

I'm grateful for any input that might help, I'm currently restarting my PC all 10 minutes so that I can keep working on my projects :(((

Also not what I'm expecting from a program that I pay 40$ for a month!

Here are my specs:

Summary
Operating System
Windows 10 Pro 64-bit
CPU
AMD Ryzen 7 1800X 59 °C
Summit Ridge 14nm Technology
RAM

32GB G.Skill RipJaws V schwarz DDR4-3200 DIMM CL16 Dual Kit @ 1064MHz (15-15-15-36)
Motherboard
ASUSTeK COMPUTER INC. PRIME B350-PLUS (AM4) 36 °C
Graphics
Acer B273H (1920x1080@60Hz)
SAMTRON (1280x1024@60Hz)
2047MB NVIDIA GeForce GTX 1060 6GB (NVIDIA) 43 °C
Storage
489GB Crucial_CT525MX300SSD1 (SATA (SSD)) 39 °C
3726GB Western Digital WDC WD40EZRZ-00GXCB0 (SATA ) 39 °C
3726GB Western Digital WDC WD40EZRZ-00GXCB0 (SATA ) 35 °C
9314GB Seagate ST10000DM0004-2GR11L (SATA ) 35 °C
Optical Drives
No optical disk drives detected
Audio
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)