I've been shooting with a DJI Pocket 3 for a few months. Before that it was a Pocket 2. They have always been set to 4K, 30fps and H.264. I have had no issues with editing in Premiere Elements, Premiere Pro or a couple others video editing programs.
H.265 was, and maybe still is, a good idea for making smaller sized files. The problem is that the licensing agreements have blocked progress. We continue with H.264 and larger video files.
Is there a reason for 2.7K? For most projects, HD fills the screen with pixels. If you are going to do post processing pans, zooms or keyframes, the extra pixels of 4K will be more useful.
Switch your camera setting to H.264 and skip 2.7K. Your editing work will improve.
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