Beta 4 should be available soon today - source: Twitter :)
I asked the same question yesterday ;) PBO should be disabled. However you really should wait for 1.1 which should fix a lot of current issues.
Thanks @NightWind! That info should be into the written instructions as well i believe!
Does anyone know how PBO should be set (Auto, Disabled)? Or doesn`t it matter at all? TIA!