My Windows 10 sometimes gets lags. It's most annoying when I'm watching videos (YT/flash/disk - doesn't matter). It's look like a 0,5s screen pause and superfast foward to actual play state. I can notice it at Windows GUI too. In the beginning I tought it was a fail of Intel AHCI 5 Series driver. In depend of driver version, I noticed more or less number of lags and sound buzz, but at the standard Microsoft AHCI driver it happens too. By the way, at the Intel driver version number higher than 11.5.0.1184 the hibernation is not working properly - computer cut of the power when I'm waking it up after hibernation/fast shutdown.
Now I think It could be a problem with NVIDIA graphics driver. The problem exist at upgraded instalation and clean instalation of Windows 10. At Windows 7/8/8.1 everything was ok.
At Linux Mint instaled next to Windows everything is fine, so I think it's not a hardware problem.
My computer:
Windows 10 build 10586,
Notebook Acer TravelMate 5742ZG,
Intel Core i5 460M, NVIDIA GeForce 540M, SSD Samsung Evo 850, 4GB RAM.