@JPPoulin Yeah, I gave the router away and instead bought a Netgear R7800. Actually installed OpenWRT and am running a WDS with that as the primary, an older Netgear 6100 and a TPLINK Archer C7 as...

Yes, I'm running Firmware Version:3.0.0 0.9.1 v005f.0 Build 170926 Rel.63400n Hardware Version:Archer C3150 v2 00000000 Problem still persists

FYI that direct calls between users in Microsoft Teams causes the WAN port on the 3150 to hang and not route any traffic through. LAN access still works. Calls in meetings work fine. I don't know...