Oh okay cool, this is all great info, thank you for the answer.
Hm, from this discourse post in here, I got the perception that a lot of the features wouldn’t work well for 8.1
" Is there a "scanline sync" feature or a way to emulate it? - #9 by Aemony "
And you are indeed right, sitting on a 240hz monitor waiting for the later 360hz versions 
I’ve been much of an input lag/latency fanatic, but I try to think I’m reasonable. I just want to feel immersed in my games really. That’s fun. I actually just recently after 4 years or so of trying to “fix” variable responsiveness/lag feeling in my games no matter my upgrades, attempted a longshot. I read somewhere about Ram and total absolute memory latency and its effects on gameplay responsiveness. I quickly realized one of the reasons is most likely due to how 0.1% and 1% fps lows increase / scale very well with fast ram, which would make sense that a game becomes more responsive in those cases. I upgraded my ram to a simple XMP kit at 3200mhz, cl14 and 4.9ghz i7-6700k OC from 2133mhz cl14-15-15 kit… and pretty much the last 4 days has been the exact same game feeling day after day, session after session. It’s very strange to experience some sort of weird “voodoo” or “magic” fix, but it kinda is. I suspect playing a 60fps game allows something like this to have a bigger impact due to less leniency (total frames to choose from)
Without going into too long detail, I’ve genuinely tried a lot the last 4 years, close to everything, but this really feels different, usually if it was placebo it would of kicked in within a day or two. Eitherway, I suspect if 0.1% and 1% fps low improvements through better memory latency has made my game and gameplay and just general joy of gaming feel like this. Then my optimism for Special K goes through the roof due to the framepacing magic done by it. If only all game devs internally could do what Special K can as an external program, we’d be in gaming nirvana
/ramble over