Hi guys so i bought ElectriQ android tv (cheap 4k) for digital signage, im happy with everything what i got for price, but only problem that i can't change picture setings in apps im gonna use for advertising.

Is this apps problem, or TV because while in android smart menu same problem i changing movie/vivid/user/etc picture setings pop up shows that it changes but visualy nothing change? In some apps is fine

Please help :)