How well do NAS SSDs or NAS NVME drives run AAA PC games these days? I have a NAS that's a few years old with regular NAS hard drives and I usually get lag if I try to play more intensive games from t

Any type of SSD will be leagues ahead of any type of HDD in terms of speed. I'm guessing you'll be fine with a NAS SSD, but if you go the NVME route, just make sure that your network connection to the NAS doesn't become a bottleneck.

@Steeltooth493 Should be little if any difference when comparing SSD to SSD or NVMe to NVMe. 4KiB access patterns are fairly similar across generations of NVMe drives.

I doubt there is any difference between a "NAS" SSD and a normal SSD other than the label they slap on it for marketing. Even a basic SATA SSD is going to be like 200-300x higher IOPS compared to a spinning HDD.

1GbE networking on a NAS will of course limit the transfer speed of an SSD for sequential data, but for random data it probably won't much, and so games should work reasonable well.

But I always recommend a local SSD instead for running games/programs from.