@
SKORPI0
People trying it out in VMs don't get to feel the speed difference, though. Just the visual part.
They managed to break Haswell support somehow in this one (likely the iGPU acceleration). My
speedometer score dropped from 135 (4790K @ stock with iGPU) down to 110 on this (65) build. The previous build (51) was on par with Windows 10 score (135). The whole UI felt a lot laggier since the update. Performance regression sucks. But since it's not supported, I guess, I can't complain.
I managed to also experience a lot more bugs than with the previous one. I don't get paid for this pain, so I went back to Windows 10 as a result. Got the speed back, no issues whatsoever. Will try the next dev iso once it's out, though. Fingers crossed.
NB. Looks like Windows 11 will be
a must to extract full performance out of the upcoming Alder Lake platform, let alone the gaming features like DirectStorage/HDR/VRR.
You will be there, eventually
EDIT: Found the reason, as presumed above. There is also a regression with Kepler (w/ WDDM 3.0 support) as main GPU as well, so it's not exactly Haswell exclusive.