Hi,
Can you email hm2support@holdemmanager.com and ask for a teamviewer session with Morny, there is no way it should be unusable on a high spec machine like that. We have made a bunch of performance improvements lately but this is an ongoing process, we still have some really big performance improvements planned but they are more focused on the actual app rather than performance issues while playing which are more related to the HUD.
Im happy to show you me 15 tabling on my crap laptop with 2gb of ram and a 1.6gh processor with HM2 without any lag issues and thats on ipoker which does have its own CPU usage issues, the only problems i have is keeping up with the action. There may be still more performance issues we missed specific to certain PC configurations, it may be several things so i would be happy to work with you in narrowing this down whenever you have the time and please refer to this thread. This offer is open to anyone with performance issues.
Playing live without performance issues is probably the most important function of a tracker so this will get top priority if we can narrow it down, it sounds like more than just you have this issue but the forums/emails would be crammed with threads on this if it was widespread so we need the help of the people still experiencing these issues so we can reproduce and fix it.
FWIW its not unsual to see a couple of performance issues daily with HM1 giving the size of the user base, because we had years to track down any performance bugs 99% of those are due to specific things like badly setup import loops, 3rd party programs, PC issues etc, your issue may be a combination of both HM2 and your PC configuration but hard to speculate at this stage, what i can tell you is as soon as we track this down you can be sure it will be fixed asap i.e days or weeks depending on the complexity of the fix and certainly not months.