Sorry to hear you are having problems.
Some things worth checking:
1. Check if your mouse and keyboard drivers need updating. This might be the cause of the problem if you have a programmable mouse rather than a basic three button mouse.
2. If you are using a wireless mouse and keyboard, try with a wired mouse and keyboard (if you have one) to see if it makes a difference.
3. If you have peripherals plugged into your computer like a scanner or printer, try unplugging them and see if that stops the flickering.
If you still have problems after checking the above, please can let us know your system specifications including graphic card. Thanks.
Peter
Forum Administrator
www.reallusion.com