i use foobar200 with wasapi in event mode, and no i have no 384khz, the most is only cd quality. So it´s nothing dramatical at the moment.
but i wan´t to know whats wrong.
when i start pc the ifi software show 384khz but can´t set it in windows, thers only the option for 32Bit 192Khz.
Probably all Windows can manage. Irrelevant anyway.
I would recommend installing foo_out_asio and using that instead of WASAPI.