Three different links, three different numbers

“Wireless mouse” covers two completely different radios, and the honest comparison has to split them.

2.4GHz proprietary dongle — the small USB receiver that ships with gaming mice. These run a dedicated low-latency protocol in the 2.4GHz ISM band, and measured link latency on flagships lands in the ~1ms class — inside the same range as the USB poll itself. In controlled measurements, the best modern wireless performs indistinguishably from wired.

Bluetooth — the convenient mode: no dongle, pairs with anything. Cost: roughly 7–15ms of added link latency (Bluetooth’s own connection interval plus stack overhead) and a report rate effectively capped near ~125Hz. It feels fine for documents and web, and wrong in anything where aim matters — not because of a defect, because the protocol was designed for battery life and universality, not input speed.

Wired USB — the baseline: ~1ms-class, set by the polling rate, with zero radio in the path.

The honest trade-offs that remain

Even at latency parity, wireless isn’t free:

• Battery is a real variable. A wireless mouse that dips low can silently drop to a power-saving report rate — a latency change you can’t see unless you look. Charge/dock routines matter at the margin.
• High polling costs more. 4000/8000Hz over the air burns battery fast; wired pays no such tax. On the 1k vs 8kHz question, wireless users should be more skeptical, not less.
• RF environment matters. Crowded 2.4GHz spectrum (LAN events, dense apartments, USB3 ports radiating noise right next to the dongle) can degrade the link. The fix is positioning, not panic: dongle on a short extender, close to the pad, away from USB3 hubs.
• One more failure mode. Pairing states, firmware updates, dongle loss — boring reliability edges where a cable simply can’t fail.

What to buy, honestly

• Competitive play: flagship wireless on the 2.4GHz dongle, or wired. Both are correct; cable-drag freedom is the tiebreaker.
• Everyday + travel: Bluetooth for the universality — accept the latency, it’s not a defect.
• Never: Bluetooth for ranked FPS. Also never a no-name “gaming” wireless mouse — the budget wireless segment is where real 5–20ms link latency still lives.

Whichever link you’re on, the polling tester shows what your browser observes of the event stream — and for the wire-level truth of what the link actually delivers, the hardware measurement guide covers the methods.

Frequently asked questions

Is a wireless mouse slower than wired?

On the 2.4GHz dongle, flagship gaming wireless is effectively at parity with wired — ~1ms-class link latency that measurements can't separate from a cable in the felt experience. On Bluetooth, yes: ~7–15ms of added link latency plus a capped ~125Hz report rate makes it genuinely slower — fine for desktop work, wrong for competitive play.

Can a wireless mouse do 1000Hz polling?

Yes — over the 2.4GHz dongle, not over Bluetooth. Current flagship wireless mice poll 1000Hz by default and offer 4000/8000Hz options, though battery life drops sharply at the top rates. Bluetooth mode typically caps around 125Hz regardless of what the mouse can do on the dongle.

Why does my wireless mouse feel laggy sometimes?

The usual suspects in order: it's on Bluetooth instead of the dongle; the dongle is far away or behind metal/another PC (RF interference — use the extender cable to get it within ~30cm of the pad); the battery is low enough that the mouse dropped to a power-saving report rate; or USB port power management is suspending the receiver.

Is wired still better for esports?

Not anymore — pro usage of flagship wireless is now common because the link latency is a non-factor and a cable's drag is a real aiming penalty. The remaining wired advantages are boring but real: zero battery management, zero RF concerns at crowded LAN venues, and no firmware pairing states to troubleshoot.