9.9 bounces between 3-5% constant cpu, the last few betas including latest 17 it never drops below about 30% for displayfusion.exe, so once again had to roll back to 9.9.

So sorry for the delay I'm battling a pretty serious medical condition. I will try it I know I've run every beta and I believe anything after 10 caused me to roll back to 9.9 which is the same as beta 10 if I remember correctly. I see beta 17 was just released, should I try that as well?

Oh I just verified that beta 11 and 9.9 are the same, so yes I'm already running it and haven't been able to run a single beta after 11 on WIN7x64, because the workaround of turning off DF 2nd monitor taskbar and using native windows one obviously isn't an option with WIN7.