I should have said - all CC apps are up-to-date as is Windows 10 and other apps installed. From memory, here are the apps that were installed on the old PC that are also present on the new PC:
- Google Drive
- Google Chrome
- GeForce Experience / NVIDIA drivers, etc.
- Synergy Pro
- Spyder4pro software (colour calibration software)
- Microsoft Office 365
So, after much experimenting, I've managed to resolve this. I thought I should post on the off-chance that someone else out there is encountering similar issues. Rather than wipe the system and start again, I uninstalled what I thought might be the likely suspects. I then tested and the apps were working fine. I've since re-installed each one at a time and the source seems to be one of the NVidia apps. These were what I had installed from Nvidia:
- Nvidia GeForce Experience
- Nvidia Graphics Driver
- Nvidia 3D Vision Driver
- Nvidia 3D Vision Controller Driver
- NVidia PhysX System Software
- Plus Vulkan Run Time Libraries (that I believe are related to Nvidia drivers after a bit of Googling)
I'm not sure which was causing the issue but one of them was! The driver re-installs itself after a system re-boot so you won't lose out on having having a dodgy Windows driver installed and screen resolutions work just fine after the restart. More importantly, the Creative Cloud apps work too.
Hope this might help someone who is having similar issues.
Unfortunately this was a short lived fix. At some point, Windows 10 has updated the graphics drivers and the problem has reappeared. There is obviously one of the older Nvidia drivers in which this isn't a problem, but with the latest ones, I'm back to square one.
Really not sure if this is something I should take up with Adobe OR with Nvidia - but either way, I'm a bit frustrated!
I'm downloading all archived drivers from Nvidia now and will test these to see if I can resolve. The only other solution I can think of is to purchase a non-Nvidia graphics card and swap that out.
OK - problem has been located. The fault doesn't lie with Nvidia (sorry Nvidia!) The issue was actually caused by Synergy - this is software to share the mouse/keyboard of a computer between multiple computers. Interestingly, though, it only seems to be an issue with dedicated Nvidia graphics cards (that is, it doesn't cause an issue on integrated Intel chipsets, nor on Nvidia Mobile chips either!)
Issue has been reported to Synergy.