ASUS got a very interesting feature:
Just looking for an Android app able to handle manual exposure going along the fast frame rate of 4K 120fps from ASUS 7 PRO hardware.
As well, disabling the 'Edge Enhancement' feature offering a more cinematic outcome such as FILMiC PRO or Cinema 4K apps for example.
However, there are limitations. Those third parties don't allow any competent 4K slowmotion on ASUS 7 PRO as happens with the proprietary software.