Device: Sony xperia z5 premium
After testing what u suggest,
First Oasis new begging match,both very smooth on vertical and horizon screen.
Late game match, guardien, very lag(frame drop after loading and render problem)on vertical , rotating to horizon is a little bit smoother, but stay awhile in this match, it running playable no matter on V or H screen.
I’ve updated the Android version to use Crosswalk, which should give generally better performance and more reliable behaviour on devices with older operating systems.
We are still experiencing the lag issue on larger maps, which seems to be fixed if you rotate the device after opening the map. Hopefully we can find the cause of this soon. It is only happening on Android.