First thought is the Graphics Processor. You could have two GPUs and Photoshop is automatically selecting the more efficient but under powered one. Troubleshoot by disabling the GPU.
https://helpx.adobe.com/photoshop/kb/troubleshoot-gpu-graphics-card.html
Your card might not work well with the newer more demanding versions of Photoshop if you have an older PC. Check https://helpx.adobe.com/photoshop/kb/photoshop-cc-gpu-card-faq.html
The problem could also be a corrupted Preferences file. Usually that file travels with the upgrades. I'd try a Preferences Reset, but before we do this, back up your custom brushes, workspaces, everything in the list.
https://helpx.adobe.com/photoshop/using/preset-migration.html
Then go to Preferences > General