Low latency mode not working in IQOO devices 

I have a Bluetooth tws having 40 ms latency also bought a realme wireless neckband recently having 45 ms low latency mode. But both of them are giving very high latency and I am getting frustrated by audio delay issues. I checked both earphones with other phones also they are working perfectly without any delay. It is only happening with IQOO phones. I checked in IQOO Neo 7 pro and IQOO Neo 6 both. Please fix this issue ASAP.