How to know about MIDI controller via OTG latency on device?
So High Performance or Low Latency Audio on Android has been a work in progress for quite some time as seen on the Android Developer Audio Latency page.

Ideally the device will report supporting android.hardware.audio.pro feature flag indicating some level of compliance with the Android Compatibility Definition Document regarding 20ms round trip latency.

Superpowered is a company that makes an Audio SDK does provide test app and chart of devices/OS versions &amp; buffer sizes with their latencies. While I'm not sure of the model versions that you have, you can use the APK on the page to test your current devices and use the list to inform future purchasing decisions.