Lower quality "preview resolution" works only on HIGH QUALITY track compositing
is is use HIGH QUALITY PREVIEW resolution (track compositing menu' on timeline) i can switch the preview quality to 1.1 / 720p / 540p / 360p / 270p without issues...
but if i switch to a from "HIGH QUALITY" to "PREVIEW" .. when i change the preview quality i have a misplacement on the project monitor.
here a video about this:
i'm using latest build for Windows.
probably on this: #646 (closed) and #649 (closed) the issue is the same.