You need enterprise class SSD for sustained 4K transfers. The base models don't work the cells enough.About the Stuttering being game code's fault:
I had this feeling in the beginning, but i have already tested the same games in another 3 pcs (2 of them with a really close setup) and could not spot the problem! my friends that came here noticed the issue too.
there's the video demonstration...
0;40 to 0;45 - loading stutters
1:00 to 1;03 - texture popping + stutter
1;06 to 1:09 - texture popping + stutter
1;31 to 1;37 - Big texture popping + Big stutter
Prints from the exact time
Another thing that i realized is that, after setting up the SSD, the stutter seems to be even worse some times.
I will soon make the logs and everything, but i can already tell that i've gone before all these windows tweaks and the issue persisted. tried all "performance options" and "modes" -power saving, balanced and perf, even messing with the advanced options". Virtual memory > already tested without, with, system managed, manual value, in ssd and HDD. EVERYTHING.
Like my friends said, it can only be the devil...
soon i report back with logs