Does a work VPN slow my home broadband?
Who this page is for
Remote workers who notice slower browsing only when VPN is connected.
Plain-English definitions
- Split tunnel
- A VPN configuration where only some traffic goes via the corporate network and the rest uses the normal internet path.
Test method
- Run Pulse with VPN disconnected on Ethernet.
- Repeat with VPN connected.
- Share both to IT if work tools are unusable.
Pulse measures download, upload, ping and jitter in your browser, and grades how your ping holds up when the line is busy. See our upload guide.
Compare broadband deals when your line is too small for what you do: live deals at your postcode on BroadbandSwitch.uk, lowest monthly price first, from 30+ UK providers.
UK rights and switching: start with Ofcom’s broadband guidance for personalised speed estimates, switching, and complaints.
Example scenario
VPN on: Pulse shows higher latency. IT adjusts split tunnel for video calls; home gaming returns to normal paths.
FAQ
Is the home ISP always at fault?
No. VPN concentrator load and routing choices matter too.
Why does IT ask for speed tests on and off VPN?
They need to see whether slowness is on the home path or inside the corporate tunnel.
Can split tunnel reduce load on VPN servers?
It can route only work traffic through VPN, leaving public internet traffic on a shorter path.
Should I use consumer VPN at the same time as work VPN?
Usually no. Layering VPNs adds complexity and often hurts performance.
Does DNS on VPN matter for calls?
Sometimes. Follow IT guidance; do not change resolver settings without approval.
What should I log when reporting VPN issues?
Timestamps, location, wired versus Wi-Fi, and whether public sites are slow only inside VPN.
Related guides
- Does a VPN slow down streaming?
- Why is my video call quality poor on broadband?
- What are latency and jitter on broadband?