How come?
Isn’t the mali 400 just as old as Adreno 320 if not older?
https://docs.unrealengine.com/latest/INT/Platforms/Android/DeviceCompatibility/index.html
on here it says 320 adreno is not compatible with those settings and even the 330 adreno has horrible performance. But you say its a driver issue?
I am just curious could it even support it?