So yeah, unboxing videos already exist, so I figured I would try to unbox it and get it up and running, as quickly as possible, in a single take. Took longer than I thought, haha. Crap.
The jitter/discomfort I experienced in Proton Pulse was only because the laptop could not reach 75 fps, low persistence really needs maximum frame rate. I came to this conclusion after testing more demos and comparing rendering performance.
EDIT: Or, it was actually because of direct mode, later when running in extended there was way less issues.