Hi Softbass,
Thank you for the Video again !
Unfortunately, we can’t reproduce this with
- iPad Pro11, 2Generation iOS 12.1.4 + 12.2
- iPad Pro, 1Generation, 12.9 inch, iOS 12.1.4
“Ultra Low” latency settings, 44 + 48 khz
Here is a link for my video, you can download it for 7 days.
I exactly recreated your case and test it several times.
All what is not in sync with cubasis is my Timing 
Cubasis synctest download link until 06.05.2019
https://we.tl/t-3gWWxTOb16
I’m guessing it’s your iPad + iOS or your latency Setting.
Attention : With iOS 12.1 there were some heavy sync + cpu problems only with the iPad Pro from october 2018
Please send us your Detail iPad + iOS Version.
best greetings
Jan