I have a desktop running on HD4600 (4790K) it's very smooth and I faced none of those problems with it, and I find my Laptop very laggy and sluggish compared to it. Now to the funny part, none of those issues are present when I decrease the resolution from 4K to 1080p, everything is smooth like it's supposed to and no playback issues, I am pretty sure that HD530 can handle Windows 10 UI animation, web page scrolling and decode a 4K video just fine. Just trying to move Spotify window around is like 7fps. When I watch 1080p movies on MPC-HC in fullscreen when trying to change volume with arrows/mouse wheel it also lags, and 4K videos are lagging and sound goes and comes back in 4K playback. The problem is: Windows 10 interface is laggy when opening/closing start menu, maximizing/minimizing windows, opening task view, scrolling web pages like facebook on chrome and more (FPS is way bellow 60).

I am using Windows 10 Pro 圆4, cleanly installed and fully updated with all drivers updated as shown. I'll start with my specs and list of my driversĦ700HQ, HD530, 4GB GTX 960M, 12GB DDR4 2133MHz, 1TB HDD, 4K screen.

Intel hd graphics 530