LAGINSPECTOR
← Back to report

Getting Wi-Fi to behave — disabling 2.4GHz

Why 2.4GHz is the problem

If you're on Wi-Fi, most routers broadcast two bands at once: 2.4GHz and 5GHz. Your PC or laptop can silently switch between them, and it doesn't always pick the better one.

2.4GHz has longer range but is far more congested — it's shared with your neighbours' routers, Bluetooth devices, baby monitors, and even microwaves. In a flat or terraced house, you might have a dozen 2.4GHz networks all fighting for the same handful of channels. That congestion is what causes random jitter spikes, even when your signal strength looks "full bars."

5GHz has shorter range but is much quieter, higher bandwidth, and far more consistent — exactly what you want for gaming, as long as you're not too many rooms/walls from the router.

The fix isn't always "turn off 2.4GHz entirely" — that can knock older smart-home devices offline that only support 2.4GHz. The safer approach is to force your gaming PC specifically to use 5GHz, and only disable 2.4GHz outright if you're sure nothing else in your home needs it.

Option A: force your PC onto 5GHz (safest, no router changes)

  1. On your router or app, look for two separate networks — often named the same with a suffix, e.g. HomeNetwork and HomeNetwork_5GHz, or sometimes they're combined under one name.
  2. If they're separate, just connect your gaming PC to the 5GHz-suffixed one directly, in Windows' Wi-Fi settings.
  3. If your router uses a single combined network name (common on newer routers using "band steering"), you may need to temporarily split them — see your router's wireless settings for a "Smart Connect" or "Band Steering" toggle, which you can turn off to get separate 2.4GHz/5GHz network names, then connect to the 5GHz one and re-enable Smart Connect if you like.

Option B: disable 2.4GHz outright (if nothing else needs it)

Check first: smart plugs, some smart bulbs, cheap smart cameras, and older smart home hubs very often ONLY support 2.4GHz. If you have any of these, use Option A instead.

Common UK router brands — where to find it:

If your exact router isn't listed, search "[your router model] disable 2.4GHz" — the setting exists on essentially every modern router, just in slightly different menu locations.

After making the change

Restart your gaming PC's Wi-Fi (turn it off and on in Windows settings) so it forgets the old connection and reconnects fresh. Confirm it landed on 5GHz: Settings → Network & Internet → Wi-Fi → click your connected network → check the "Network band" field shows 5GHz.

Further resources