Very low fps in iqoo Neo 6 phone

[Shakalava]

I have iqoo neo 6 phone which have snapdragon 870 processor no root but still I get a maximum of 10 fps and mostly below than that in my gta 5 game on mobox emulator. Please help i want to play it in good fps. Other snapdragon 870 devices have managed to play gta 5 game with good fps so why not my device? Please help.