What is the software that’s rendering the information in the upper-left corner of the Scene panel? Is this from the GeForce Experience software’s overlay functionality?
Can you try disabling that software that’s showing frame rate and other info in OpenGL views to see if that helps? Character Animator uses OpenGL to render content in the Scene and Puppet panels.
I updated my video card to the latest version. RX 480 v. 19.1.1
Preferences > Live Outout > Enable Mercury Transmit (mark)
I opened the boxes for the same problem for the first time I did not understand.