True g-sync has better frametime then g-sync compatible?

[wiseude]

Make sure you're testing at 1080p, not 1440p. At a higher resolution (or even with different graphics quality settings) frame times will vary.

I said I did.There is a difference in frametime with the same settings.1080p144hz has much smoother frametime overall then 1440p 165hz is what I'm trying to say and I don't know why.
I expect lower fps not more erratic frametime.

You can't compare 144hz @ 1080 vs 165hz @ 1440p. On the same system, 1080p 144hz is much easier for your system to hold on a steady framerate vs 1440p. Basically meaning your 1% low's will not drop under 144fps @ 1080p but will drop below 162 fps @ 1440p. That is the reason for your stuttering issues. This has nothing to do with drivers or anything. You will never fix this problem unless you set a cap around or at the 1% low you are getting. Only then everything will be buttersmooth.

Trust me, i've been digging into this for years. And the same problem will always come back at completely different hardware. The only way to have 100% buttersmooth gameplay all the time is by capping your FPS at or below your 1% (or even 0.1%) lows.

It's a 3080.it's 50% better then a 1080ti so I expected this to be non issue so my only other conclusion is either a 9900k isn't powerful enough for 1440p/165hz or the card doesn't scale properly on 1440p (which was brought to my attention by numerous ppl and I think there's was even a video about)