The "threadcount" on BBP is not what you usually would think of it compared to -let's say- cryptonight algorithm or something like that. If you are running on windows and want to use your PC for something else while mining BBP, you should go to task manager, assign the lowest priority to BBP and then step-by-step raise your threadcount (e. g. on-the-fly in debug console via "setgenerate true X", X being the thread count). Then wait for your pool output to adjust (maybe 20min) and see if it's getting you higher shares (or HPS2). In the BBP algorithm it is easily possible to assign way more than 1 thread per physical CPU core (or even more than 1 thread per logical core) and still get better results. You have to find a "sweet spot" for this.
Of course you should have a CPU at stable clocks/voltages and proper cooling for all of this, but that should be prerequisite for all mining going on with your CPU.

That being said for people with a physical 64core machine (whatever the heck kind of a monster that is.... ) the max. thread count of 40 seems too low; I'm not sure where this restriction comes from, maybe it's necessary to put a lid on the "overhead" produced by the high amount of threads.



P.S.: @Rob: just 2 very minor things I realized on the pool page:
1. Would it be possible to configure the login page for "hit enter to login"? It is quite strengous with the frequent auto-logoffs to always type your login, password and then move your hand to the mouse and click on the "login" button.
2. The extra column stating "GlobalErrorPercentage" on the Leaderboard is definitely overkill and takes up alot of additional horizontal space. In my opinion it would be better to add this information in the header of the "ErrorPercentage" column (maybe like ErrorPercentage
Global=XX%
or similar).

I am getting the error "MAX THREAD COUNT OF 40 EXCEEDED-PLEASE LOWER THREADCOUNT"   Why is there a limit on 40 threads?    I am running on a 64 core machine.