this time, played with 2 different sources: an action cam shooting 1080p and a drone shooting 4k.
was quiet fun to merge everything to create a consistent movie.
nevertheless, i’m starting feeling the limited performances of my laptop, as editing becomes sluggish during 4k clips editing. but overall, was still able to complete successfully with comfortable performances.
no sure if that answers you question but project was set as 1080p even before importing any clips. and i usually start importing the cam first, so 1080p first.
haven’t tried to compare both modes, but had some experience with full 4k (project setup+shots+output) and that was muuuuuuch slower.