I went back to the stable version and it seems like the speed of my computer was tripled. Everything now works including Hotmail. I will try this when it goes final.
Yet on my system it works well including AOS
Win 8.1 64bit
I am using Win 7 64 Bit Pro with 24GB ram and a 3.2Ghz Intel CPU. Maybe that is the reason. I will never use Windows 8, maybe 9 but not 8