MixKey Driver in Cubase (Windows 11) does not exist - Problem Latency

Hallo, I want to stream life-music (Piano/Vocal) to Youtube with Cubase-effects.

I connected OBS Studio, Mixkey and Cubase, using Audiointerface UA Volt 2.

In Cubase (WIN 11) is no driver Mixkey visible, the only driver which makes a connection with Mixkey possible, is “Steinberg built-in ASIO Driver”.

BUT now the Latency, I hear in my headphones, is terrible high. Cubase shows Input Latency 10.000 and Output 20.000. If I go to the Settings of the Steinberg built-in Driver, I can´t find a point or possibility to change the buffersizes.

So, has anyone an idea how I can manage it?

Thank You!

DAW - Steinberg built-in ASIO Driver
MixKey Audio System - should be the ASIO Driver you usually use for your Interface.

Your coming out of your DAW into MIXKEY using [Steinberg built-in ASIO Driver], then Inside MIXKEY your using your Interface ASIO Driver.