I'm running a new installation of OpManager monitoring ~250 devices.  Sometimes when I'm adding in URL monitors, service monitors, and devices the websites will time out and just freeze.  Then after it freezes I am unable to get to the website at all for some time.  Are there any performance configurations that I need to put in place?  Can I add more RAM to the java application or anything?  Do I need to change something to run in 64bit mode instead of 32bit?  Any advice would really be appreciated!

Edit:

I'm using Windows Server 2012 with 12gb RAM and 4CPU

Thanks,

Justin