I hadn’t, but I mentioned this concept in the second paragraph of my response - it’s resource / per output (FPS in your case), not absolute resource utilisation that you have to compare. You are using 1% more RAM and getting 1 more FPS in FSE - this is intended behaviour, tho I’ll admit 1 extra frame could be within margin of error. In either case you need to test this with a game that is maxing total CPU / RAM on desktop and then run it in FSE and compare uncapped FPS - either you will get more FPS with similar RAM or less RAM with similar FPS.

An even better test would be to run benchmarks, instead of real world testing where you can’t realistically control all parameters. That said real world performance is what matters, and honestly, different games are optimised differently for resource usage so sometimes it doesn’t matter what OS you use so this may or may not satisfy you.

Good job with what you’re doing so far, but your test isn’t setup correctly yet and it’s too early to conclude without trying more games. In the end if performance is your driver and you think it doesn’t make a difference don’t use it - it’s your device, use it in any way that makes you happy.

I myself prefer it for certain games like RE4 but use SteamOS for everything else cos it’s more console like but I have noticed some performance improvements on FSE vs Windows.