It’d be helpful if you gave a complete verbal description of your problem, in detail. I watched your overly short video and all i got out of it was the sound was not synched to your playing, the sound had a long lag time after the playing.
FWIW, i’m using the iOS version, and experience no problems in mono mode.
You might also check out the IK Multimedia forum, they have company reps that answer questions, and if they don’t have the answer their factory support staff get back to you via email.
NS 88 Classic / iRig Keys I/O 49 / iPad Syntronik, Galileo, Neo Soul Keys
Win10 laptop i7 8GB 500GB
Yamaha melodica, alto recorder / Congas
Roland Street Cube EX / QSC K10, K8.2 / SS V.3