When in play mode, toggle the loop of and one creates hi pitch buzz and have to reset the audio engine to get it to stop.
Toggle on kills sound and toggle off makes high pitch buzz. Also happening now in non play mode. 
 
Splat 6 22
Tascam US-1200, newest drivers, ASIO, AD2 drums, 1 midi and a few audio tracks, and  some VSTs. WIN8.1

Not happening here...
 

gustabo
Not happening here...
 

are you using WIN8?
 

Dave000

gustabo
Not happening here...
 

are you using WIN8?
 

Nope, Win10 (see my sig)

yea I did that's why I asked :) lol
but I had not added that till now... I will test it on my win 10pro system later...

Works fine in win10pro.. but the piano roll is messed up missing notes... lol Converts to an audio wave ok though... :) 
 

I'm still having this problem. As the track is playing, If I set or reset loop length  or move the now time marker.
Crash and buzz every time and I have to reset the  audio engine at least two time before it will stop.
this really slows me down. WIN8.1

Video of the problem.
https://www.youtube.com/watch?v=q5PXuy2rRpQ

Are you using ASIO?  Is your buffer setting particularly low?
 
You could try increasing to see if it changes things.

using ASIO drivers... I can see changing to MME could fix the problem but it should work with ASIO... :)
And I can't record multi tracks at once in MME anyway.