Update: I've been able to play the game recently for 1 hour+ stretches of time without issue. The issue seems to occur if I maximize or resize the window. Too bad, be nice to reliably play in a full-screen style mode, but I'm happy it's working.
Game freezes after a few minutes of gameplay. It's the only app open, Java 8 up to date. WIN10 x64 version 2004. Any suggestions?