About PS5 crashes (possible solution?)
TLDR: Always make sure to have 25 or more cards on your deck, cautious with story cards changing, if a card is removed from your possession, change the deck immediately.
SPOILERS AHEAD I am currently playing Thronebreaker on PS5 right now and on the last parts of Aedirn and on Mahakam the game started to crash a lot on mosly random moments, sometimes even before the main menu screen, and it always crashed specifically on a particular Puzzle involving a troll and rocks in Mahakam.
In Mahakam Black Rayla and Eyck can leave your party, also the Gabor upgrade remove him from your deck, i believe any upgrade do. Turns out that because of this constant changes in cards for story reasons on Aedirn and Mahakam i played on side quests and walked the map with 24 cards on my deck in a lot of situations and since the game dont warn about this less than minimal cards thing i would only check to change my deck before full combats or story missions.
I believe this less than minimal cards situation propagates some errors because since i changed and constantly checked to be on more than 25 cards the game never crashed anymore, including the Troll and sliding rocks puzzle, and i am currently on the final parts of the Angren map with no crashes.
It worked perfectly for me but it would be good if someone with similar problems on PS5 could check this.