outgoing zoom call voice choppy while going through opnsense firewall

[raj_fw]

Using latest version of opnsense. Have a unique situation. I have a AT&T Fiber 1 Gpbs symmetric (in reality 800-900 Mbps) connection and I have the modem connected to opnsense firewall, which is connected to a Netgear access point. In This setup everything is fine, streaming videos, browsing, Google meet, youtube etc. While on zoom calls, incoming video/audio is fine but outgoing audio is very choppy. If i remove opnsense from equation zoom calls and audio are perfectly fine.

Any tips how i can troubleshoot this further? Basic firewall rules. No IDS/IPS/Traffic shaper present

Thanks