I got stacks of free ram, can i use it to stop appcode EAP 2.0 freezing every few seconds?

I'm currently finding that the current (rather wonderful) eap freezes constantly.. I noticed it was constantly garbage collecting. the effects of this were:
long pauses at cricitcal keystrokes,
waiting ages (sometimes as much as 30-60 seconds) for warning lines to dissaspear for valid code.

I updated my vm settings as follows - it's still pretty painful though.

-Xms512m
-Xmx2000m
-XX:MaxPermSize=1500m
-XX:ReservedCodeCacheSize=512m
-XX:+UseCodeCacheFlushing
-XX:+UseCompressedOops