Lately I have experienced 3 crashes on my 2020 iMac 27" 3.8 GHz 8 core Core i7 with AMD Radeon Pro 5500. I have installed 64 Gb Ram from OWC. Now I found in the reports in the Console that the crashes were provocated by the CXX Process from Adobe Creative Cloud Experience. After having read a webpage about this process which recommends to delete it, which I have now done, I hope I will not have this crashes again.
* How to start your M1/M2 Mac in Safe Mode On your Mac, choose Apple menu () > Shut Down. After your Mac shuts down, wait 10 seconds. Press and hold the power button until the startup disks and Options appear. Press and hold the Shift key, then click Continue in Safe Mode.
Try fixing permissions by running Disk Utility (Disk First Aid) or, again, using Onyx.
Thank you. I have run the Onyx. It have helped. But I see now that I had two kind of problems. One was the crashes. But the other one, was that the screens of a sudden lost the images, without the computer crashing. So after having done different trials and erros with the connected devices, I took away one of the two screens I had connected to the iMac and this seems to have helped. Although they are both within the specs of what the iMac handles, it seems that the graphic cards did not do it. Both were connected with a USB-C to HDMI Cable in each Thunderbolt 3 port. With only one connected the error has not reoccured so far.
Because of the different testing I have done, it has taken time for me to respond to your post. But thank you again,