Severe graphics issues

[whairst]

I'm having some really bad graphics corruption issues which may or may not be TeamViewer-related. I'm running TV on CentOS 7. Often some windows are fine (Chrome, TeamViewer), while others are unreadable (command line, desktop). See attached partial screenshot - which happened when I tried to maximize Chrome.

Local display shows the same thing as TV does. I can remote desktop (VNC) into the machine, going to a different display/desktop, and it always works fine. Same machine and OS didn't always have this problem (possibly started a few months ago), but now is constant.

Any ideas on what is wrong or how to diagnose?