Throttling of output video resolution and frame rate

[cdk]

we notice that when there is high image complexity, zoom will throttle down the video output resolution and possibly frame rate to get the same quality through the pipe. 

is there a way to force a lower starting resolution and a fixed frame rate so that it does not change as the content changes?

we are trying to record the output via Zixi and get loss of input because the resolution changes when we turn our cameras on vs test signal.