OTG + Charging at the same time:
Plug in the hub and power supply into Max3 without anything else attached and then reboot, it will be charging upon boot. Then if you insert the keyboard and mouse, it still wont work, only still charging... but if you are rooted you can "echo '1' > /sys/class/power_supply/usb/usb_otg"
Apps not autostarting at boot:
Use Magisk and install App Systemizer. Install the app into priv-app
No split-screen functionality:
Warning-Somewhat dangerous. Install quickswitch Magisk module and set it to use a third party recents app launcher such as Lawnchair, but keep onyx's default ContextBrowser Launcher.
Google Play on this device sucks:
Remove all google apps using Terminal Debloat Magisk Module, then install microg magisk module and the Aurora Store app
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