Inserted the Mixer Delay in a 5.1 monitor path in the Control Room.
Inputs to the plug were routing randomly to different outputs . . .
As in, L to L (correct), but R to Center and Center to R and Ls to Rs . . . Rs seemed to be missing.
LFE might have been going to Rs - don’t remember the exact mis-routings - but you get the idea.
All the indications on the plug were correct - as in L > L, R > R, etc.
Disable the plug and routings were correct.
After much manual reading and such trying to figure out what I was missing I discovered that if you changed the route - and then put it back correctly, it was fine. Did this for all 6 channels and everything was fine.
Anyone else experience this?