I did wonder over a processing lag but not so. Or if it is, it is beyond usable. Besides, I have no spinny thing. Only the blue Drive Unhappy warning when it balks.
I started a whole new Reason +126 Audio Tracks project with a restarted machine and it is working - not that I have tried actually mixing yet. This morning I loaded the older file which played for a few secs and then stiffed. Then I launched the new project and after the waveforms appeared hit play and it seems fine. This still makes me feel that after a certain amount of session data, Reason breaks and saves that break into the project so it is curtains. If you can prevent that break, it is fine but if not the fail is inevitable. I worked out how to avoid the break with podcast editing by cutting to shorter sections and then constant render/bouncing every 5 mins - and then bouncing to the template at the end. A bit annoying and 1999 but works. Seeing I am not yet sure what causes the break in the Song Mix, it is hard to avoid.
Yes, Windows only. I cast off the shackles of my Apple affliction decades ago. That said Logic does look pretty spiffy these days. If only it didn't require a boat anchor as a dongle LOL
I just had Mixbus there for a review so wondered what would happen to see if it was a drive thing. Harrison Mixbus will NOT be with me long as the more I look at this the more they look like a flim-flam operation overall (I'm not the only one asking this Q - even Dan Worral has entered that fray but that is a whole other conversation).
Is Podium still a going concern? Ooh, last release 2018 seems not so. While it may be cool, I can't gamble with paid work on a dead platform.
That leaves me at Cubase (still with the dongle), Studio One, or Bitwig if Reason is not the right tool for this kind of work (ProFools would probably be tres solid too but their sales model leaves me cold).
A lack of engagement from RS is not reassuring. If they need to say "not us for this sort of work" they could do so privately and I would respect that and not blabber