Why did my old laptop get slower after I upgraded broadband?
The broadband upgrade does not upgrade the laptop’s Wi‑Fi radio. An older 802.11n/one-stream client, driver or 2.4 GHz connection may be the limit.
Client standard, streams, channel width, band, driver, CPU.
Device support if drivers/current OS do not resolve.
Show the technical detail
On a managed Wi-Fi plan
Show gateway speed is healthy; recommend 5 GHz/Ethernet or device upgrade.
On another provider's router
Same across ISPs.
What to be careful of
Avoid claiming a precise maximum without the exact adapter model.
Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026