Welcome to the community!
Depends on your link quality and strength.
USG-XG-8 • USG-4-PRO • USG
US-XG-16 • US-48-500W • US-24-POE-250W 2x • US-16-POE-150W 3x • US-24 • US-8-150W • US-8
UAP XG • UAP-SHD • UAP-HD • UAP-NanoHD 2x • UAP-AC-PRO 2x • UAP-AC-LITE • UAP-AC-IW • UAP-AC-M • UAP-AC-M-PRO 2x
UAS-XG • UCK-G2-PLUS • UCK-G2 • UCK
A well set up AirMax M5 PtP bridge with CLOS and no incursion running RX levels between -50 to -60db will attain around 75Mbps.
If a M5setup won't handle it, what would you suggest?
I expect 20 cams to use somewhere between 150 and 250 mbps depending on settings so more than what M5 is capable of.