MULTIPLE SKILL CHECKS FOR A SINGLE DIALOG ARE HORRIBLE.
I'm surprised I don't see this suggested sooner in the first few pages, but in the 12 hours I've played for, this is the worst aspect of the game by far. It feels like you're simulating the shittiest, most hostile Dungeon Master to ever run a game. I'll use the Necromancer Tome as my example here, since that's what so recently caused me to rage quit.
Player: "I open the book." DM: "Roll a Wisdom Save. DC 13." Player: "15, got it." DM: "Hmm...No. Roll another one." Player: "What?" DM: "You heard me." Player: "Why? I just passed." DM: "Because I said so. It's a really evil book, it's messing with your head. And the DC is 15 this time." Player: "This is ridiculous. You coulda just increased the DC or told me to roll with Disadvantage if it's supposed to be super hard. There, rolled a 19. Happy?" DM: "No! Roll again! DC is 18 now!" Player: "What the fuck is wrong with you?!" DM: "ROLL A-FUCKING-GAIN, AND IF YOU FAIL, YOU GET A PERMANENT PENALTY TO ALL WISDOM THROWS! ROLL THE DICE, MOTHERFUCKER!"
I don't even know what happens after the third roll, because despite all my save scumming, I haven't managed to roll three successes in a row yet. That's some serious nonsense.
Somewhat related, but Dialog options should say 'Check' and not 'Saving Throw' if it's supposed to be a check. I'm playing a wizard with Proficiency in Wisdom Saving Throws, but I don't get the +2 bonus for these rolls, and the dice roll itself calls it a Wisdom Check.