OK, upon trying the stem splitter with other files, I got better results than my previous try... but IMHO the overall quality isn't as good as I was getting from RB 2025. It sounds like the EQ changes as the song plays... alternating between a "pretty good" tone to a tone that sounds like all the high frequencies have been removed. Not totally, just enough to make it annoying. It's most noticeable after muting the vocals.

I also notice that consistently when I extract stems, RB will load all the stems except BASS and OTHER... but they are in the extraction folder and I can manually import them.

I can't imagine they're being left in the folder on purpose, so maybe an issue?