I finished the Drake/panther fight at the dig site on PotD and TB mode, also with Galawain, Woedica, Abydon, Skaen, and Ondra challenges enables. Personally, I enjoy the combat a lot more this time around, especially on TB. The UI could use work, but I find it functional enough. No major bugs . . . yet.
With TB, defensive buffs and some modals feel a lot more useful now that I can plan per round. The interrupt modals also appear to have a nice niche. Perhaps more importantly, I just find the combat more readable.
While I prefer TB, I get the sense that PotD becomes even more trivial. Even with Woedica and Galawain challenges, the drake fight was a push over on TB imo. Granted, I am playing an arcane knight with Blood Mage. That combiniation is so powerful, but also satisfying. Cycling between chill fog, arcane veil, blood sacrifice, and concelhauts drain is brutally effective. If you play human, you can more consistently make use of fighting spirit. In contrast, I found Rtwp too erratic to make consistent use of certain combos.
My arcane knight did die once, because I got too cheeky with blood sacrifice and I did not realize the spiders had volatile and explode upon death.