Cubase iC Pro on Galaxy Tab 3 "10.1"

hello,
I have an Android Tab 3 10.1, where it Cubase iC Pro runs.
The app responds very slowly and takes forever to start, partly with Graphically hangers.

Have also all other app’s disabled in the background, bring no improvement.

Have the app on my Ipad2, where it runs normally.

Anyone have a tip for me …

PS:

I use a point to point network connection with a 300Mbit router from Netgear, so no other devices on the network.

Same behaviour with my Galaxy Tab 3. Tested with direct virtual hotspot connection and via home network, same result slow and lagging. Any solution?