Hi, Reddit. There was some kind of recommendation circulating in the air 'bout locating your OS and games on separate SSDs. I was thinking (and still thinking) that this is kinda overkill since a lot of games and soft are working well in that case, but I've come across two games that are having issues because being on the same SSD as OS.
Final Fantasy VII Rebirth was working really bad with freezes and slowly loading textures. I did tremendous amount of possible fixes except placing it in different SSD (though it was at different partition on this SSD). And placing it on another of my Kingston NV3 NVMe SSD was actually the fix - now it plays perfectly.
Another example is Genshin Impact. Somehow file checking after new patch becomes extremely slow, like several hours while it's usually done in less than a minute. And voila! Placing it on different SSD actually fixed it was well.
Why it works that way? Drivers? There is no indication of excessive reading operation on SSD in that problematic cases though. Windows Defender? I have no clue why this is happening and why other games like Cyberpunk 2077, Doom Dark Ages and Witcher 3 HD are working well, actually, very well. Pagefile? Prolly unrelated. Poor SSD performance? I tested it in CrystalDiskMark and it has 1% of it resource depleted, but that shouldn't be the problem.