Game feeling jittery

OY!!! Man, that thing! Whatever that thing is with BF6 has been driving me up the wall too!! 

I searched on "BF6 jittery" and saw the first part of your post here near the top of the results and almost jumped out of my chair!

SH1ZA! What a PITA!  I have excellent frame rates as well. All other games on my system play/respond/feel or whatever, just fine. Better than fine. Perfect, in fact.

I'm playing on an Area 51 18 laptop with the 5090m and 275HX CPU and via an external monitor with a 3840x1600 resolution.

The problem is so damned odd because, like yourself, framerates are not even slightly a problem and it's just so weird and subtle but 100% not imagined. Oddly, on my 14900K/4090 desktop, playing at the same resolution, I don't see the issue at all.

I find it easiest to see/perceive when standing over some prominently highlighted array of objects on the ground, like small rocks all in a group that is largest enough for me to use the LEFT/RIGHT keys to simply strafe across from left to right. When doing this, focused on those small objects, the jitter is super apparent. Like it's jumping 1px or so as I traverse horizontally. 

I've never considered some issue with the game and mouse input. And using the "isolation technique" I mention above, where no mouse input is active at all, the jittery is still massively apparent. It feels like what I'd imagine a game that is outputting a solid ~140fps would feel like if playing on a 30hz monitor. 

I've tried FSR and this mitigates the jitter some, XeSS, DLAA with all in-game quality settings changed every which way and the jitter remains though it may be more or less with any given scenario.

I'm glad you put this out there. I'd suspect there should be more attention to your post by now but at least I saw it and am adding a similar comment on the issue.

I'm going to revisit playing the game on my desktop since I just realized I had been playing on that other machine earlier and then, when moving to my other desk where the laptop lives, as soon as the game started, I was like WHAAAAAA???  And frames were well over 150fps.  And even when adjusting things to where the game was more around 120fps, jitter was still there.

Freakish.