Hi everyone, After several conversations with Microsoft support, our ISPs, and Meraki support, we’re still stuck — so I’m hoping someone here might have additional insights. Environment MX95 security appliance 3 × MS210-24P switches (stacked) 9 × MR44 access points Wireless configuration Two SSIDs: Internal network: DNS over VPN Guest network: Direct Internet with 8.8.8.8 DNS (Meraki DHCP for both) 5 GHz only AP uplinks at full 1 Gbps / full duplex RF profile: min Tx power 10 / max 19 Meraki dashboard reports 100/100 on RF metrics (no interference or channel overlap) The problem Screen sharing in Teams or WebEx from Wi-Fi clients is: Grey/black screens Severely delayed (10–15+ seconds) Often unusable Guest network devices (no VPN, no filtering) → same screen-sharing issue Meanwhile, wired clients have zero issues — instant screen rendering and smooth cursor movement. What is working perfectly Voice/video in calls General Wi-Fi performance Streaming 4K YouTube Speed tests ~500 Mbps over Wi-Fi (latency 10–15 ms, sometimes up to ~45 ms) Ping to Google averages ~10 ms with tight percentiles Other company sites with identical hardware + configuration → no issues
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