PostFri Mar 08, 2019 2:07 am After installing Microsoft's Cumulative Update KB4482887 to my Windows 10 Pro, 1809, playback stuttered on the edit page of DR 15.3 -- framerates dropped from 60+ to mid-to-high 30s. Microsoft is aware of framerate problems in some games, but, obviously, it also impacting DR. Solution -- uninstall KB4482887. Then wait for Microsoft to release an update without this effect.