I set the buffering to as low as possible, set the processes priority to "high"
and never have any skipping on files from aac to 24/192.
My PC is a 6 year old Dell XPS with old Core2 Duo processors.
What's the benefits of settings the buffering as low as possible in foobar? I've set my Buffer Size on my external RME Babyface at 48.
And where do i change processes to high?
Well, WASAPI should present a somewhat clearer sound, and while its results depend on the hardware used, my DAC does sound cleaner. Of course that it has the disadvantage of being unable to apply any sort of processing, as any change in the sound chain breaks bit-matched playback.
So, if your issue is fixed for now, don't mess further with your system, as all further tweaks for optimizing a system for audio will lower performance on other areas.
WASAPI totally helped me with Foobar! Never again will I use Foobar with out WASAPI.