Request for Wasapi event style 5ms buffer on hardware buffer drop down option box.
I've tested it, I adjust it manually in the registry. 5ms works flawlessly for me for both audio and watching dvds/blu ray.
update: At 5ms, i did find an issue, when the pre-buffer kicks in at defined time (i.e. 6 seconds), there's a small audible click, changing back to 10ms solves this.