How many Faster RCNN or TF-SLIM based live camera feeds can be supported by one RTX 2080

Hi

How many Faster RCNN or TF-SLIM algo based live camera feeds can be supported by one RTX 2080. Feeds running at 30FPS.

I understand the question is too broad, but if someone can give me some kind of benchmark numbers to calculate this, would be great!

And which parameters can be tuned to support more live feeds on 2080.

Thanks.