Update: So I literally played for 3 hours trying to finish that stupid ass plant quest, and get this; MASHING THE FUCKING SPACE BAR DOES NOTHING! Maybe fix your game before you start charging people money for it. Second update: Even doing it with a controller does absolutely fuck all. Either make the quest skippable, or fix your shit.
I think slow PC performance may be the reason for button mashing issues during the plant minigame, and the glitchy swim transition.
What are your system specs? (RAM amount, video card, processor?) Are you playing the game with a lot of other apps running in the background?
We're looking into doing more performance optimizations ASAP!
Sounds frustrating indeed. I'll keep working to optimize it! We have a parallel Unity project for code rewrites that I'll be migrating to, now that Act 2 is published. Fingers crossed Act 3 will be less buggy! :}}
(Also I gotcha fam, I added a cheat code to skip the plant quest minigame that'll be included in the upcoming bugfix patch!)