1. Can't speak on the Denon drivers, haven't used them.

2. Not sure what your asking... I've found that depending on how you set up the macroes, you can't use a multipage "Please wait" screen because the remote waits for a response back from the XP8 that the macro has finished. THEN it moves to the next step which is usually the first page flip. This is the case when using the source buttons in "stand alone".

3. I've seen this issue as well, but I wouldn't go so far as to call the software glitchy... I've done 5 or 6 systems and seen what you are discribing once.

4. Is your ZM24 anywhere near a WAP? I had that problem several times before we realized that WAPs cause issues when placed near a ZM24.