this is still actual, i am experiencing the same troubles on win 10--8.1--8 64 bit versions (with other words i tested on 3 different setups)
it is a problem of objectdock though you dont get an error or something like that but the system hangs for a few minutes, after that it works for a while but with no specific pattern or reason it starts hanging again same problem for few minutes then it works again.
when taskmanger is activated you can see that the memory usage and the processor resources go sky high for a while after that all stabilise and works probably as intended