Yeah, the results in build seem to be the same as in editor.
Auto quality (40)
Manual quality (60)
Logically, it seems reasonable to decrease the quality to 40 for 1080p, but in practice I find that it looks blurry compared to 80 quality at 2160p. It's a bit hard to compare because one screenshot would be way larger than the other, but I'd say it looks closer to my second screenshot here (60 quality at 1080p).