Just upgraded and you are right! It is so fast. But not only does my Vegas projects upload so much faster but my TVP software loads faster too and doesn't even use graphics cards, yet it has a timeline and playback system; all very similar to NLEs.
I see no difference compared to the 441.28 driverversion.
@j-v - Yeah, I'm guessing you wouldn't, but my previous was 431.86 in October, hence my veritable leap in performance. Ironically, if Wayne (HOS) hadn't suggested to install 441.86 'cos of the need to have KWIK Preview work, I wouldn't have known.
From observing Task Manager Performance Graphs, my GPU is being thoroughly utilized. Thusly my investment appears to be well made. 😉