I've been having this problem for over a week now. The game is very laggy. It's still playable, so I've been coping with it, but it's extremely annoying. My flash player is up to date, and my gpu is definitely compatible. Here are my specs:
32gb of ddr3 ram
gtx 1050ti sc (4gb ddr5)
I'm pretty sure my system should be able to run a flash game without lag.