Collectible Card Game Headquarters

I've noticed that when playing commander at least with 3+ players (well, one player and 2+ ai obviously), that after awhile it'll go from playing well to just... absurd amounts of lag- my cpu spikes to 90% and upwards (I am on an older i7, but still an i7), and it just wont quit until i close the program. Is there a way to fix this, or is it just a current limitation?

You can try changing the java heap size.

Thanks! I made a bat to the jar, and set it to 4gb instead of whatever it had by default, and it didn't lag at all despite having a few hundred tokens/cards out.