Continual total system lock ups after a few minutes. Requires a hard reboot, as PC become non-responsive. Removed AVAST and system works perfectly now. Seems like 20.7 has serious issues when combined with the latest Win 10 updates. I need my PC for work so no real time to investigate further but massive memory leak seems like a possibility as lock up happens over 10-15 seconds with response to mouse input getting jerky, screen redraws failing then total non responsive.