Simple answers to common Wi-Fi questions
Type your problem in your own words below. Every answer says what to check, what to leave alone, and when it's time to call someone for help.
5 answers found · last checked 17 August 2026
Why is Wi‑Fi slow when I use my work VPN?
Encryption and the route through the employer’s VPN gateway add overhead and may be congested. Compare the same device with VPN on/off; a fast non‑VPN result points away from the ISP.
VPN & workVideo calls freeze but speed tests look fine.
Calls need low loss, jitter and latency, not just throughput. Test near the router or wired and check other uploads, VPN and Wi‑Fi retries.
VPN & workWhy does Teams work on Ethernet but not Wi‑Fi?
That isolates the issue to the wireless client/path: signal, interference, driver, roaming or band—not the internet service itself.
VPN & workCan you prioritise my work laptop?
Some platforms offer device priority/QoS, which may help during local congestion but cannot fix weak signal, packet loss or a congested remote VPN.
VPN & workMy company says my IP address changed—why?
Residential public IPs may be dynamic; VPNs show the VPN exit IP. A static IP or DDNS is needed only for specific authorised business uses.