Wednesday, September 21, 2016
Issue: Frame rate drops to around 3FPS when any SL Viewer tries to regain focus after another Windows 10 application has been run in the the foreground or after the viewer has been minimized.
Microsoft update patch KB3193494 is again a cumulative patch which includes the OpenGL bug.
So if you previously removed KB3176938 and KB3189866 for this problem you will also need to block this update.
Details on how to block an update are included in the original story here