ASUS VivoBook 14 X1404 Intel Core i3 1215U Wi-Fi Slow Speed Fix Windows 11

Q: How do I improve Wi-Fi speed on ASUS VivoBook 14 X1404?

Device Manager, Realtek Wi-Fi adapter, Properties, Advanced tab. Set Power Saving Mode to No Power Saving and Roaming Aggressiveness to Lowest for maximum throughput.

ASUS · VivoBook 14 X1404 · Windows 11

Wi-Fi Slow Speed Fix

The ASUS VivoBook 14 X1404 shows connected to Wi-Fi but downloads and uploads are much slower than other devices on the same network. The Intel Core i3 1215U model uses a Realtek Wi-Fi 6 adapter. Power saving mode and roaming settings are usually responsible for throughput being significantly lower than expected.

Before changing any driver settings, run a speed test on another device using the same Wi-Fi to confirm it is a laptop issue and not a router or ISP issue.

ASUS VivoBook 14 X1404 Realtek Wi-Fi adapter power saving Device Manager Windows 11

Fix 1 — Disable Wi-Fi Power Saving Mode

Device Manager → Network adapters → Realtek Wi-Fi adapter
Properties → Advanced tab → Power Saving Mode
Set to No Power Saving
Also check Power Management tab → uncheck “Allow the computer to turn off this device to save power”

Fix 2 — Set Roaming Aggressiveness to Lowest

Same Realtek adapter Properties → Advanced tab → find Roaming Aggressiveness → set to Lowest. This prevents the adapter from dropping the current connection to hunt for a marginally stronger signal, which causes speed fluctuations.

Fix 3 — Connect to the 5 GHz Band

On your router, if both 2.4 GHz and 5 GHz share the same SSID, split them into separate names. Connect the VivoBook 14 X1404 to the 5 GHz network. The Realtek RTL8852BE Wi-Fi 6 adapter performs best on the 5 GHz band.

“Disabling power saving mode and switching to the 5 GHz band tripled my Wi-Fi speed on the VivoBook 14 X1404.” — Amirul, Bentong

ASUS VivoBook 14 X1404 Wi-Fi 5GHz band connection speed fix Windows 11

About the Author
Ryan holds a Computer Science degree and has spent over 15 years troubleshooting Windows hardware and driver issues across major laptop brands. He writes practical, step-by-step guides for everyday users at softwaredriverdownload.com.

Frequently Asked Questions

Why is Wi-Fi slow on ASUS VivoBook 14 X1404?

The ASUS VivoBook 14 X1404 uses a Realtek Wi-Fi adapter. Slow speeds can occur if the adapter is set to a low power mode, or if the Wi-Fi driver has a roaming aggressiveness setting that causes it to connect to a weaker signal from a distant access point instead of the nearest one.

How do I improve Wi-Fi speed on ASUS VivoBook 14 X1404?

Device Manager → Realtek Wi-Fi adapter → Properties → Advanced tab. Set Power Saving Mode to No Power Saving. Also set Roaming Aggressiveness to Lowest to keep the adapter connected to the strongest available signal rather than constantly switching.

Does ASUS VivoBook 14 X1404 support Wi-Fi 5 or Wi-Fi 6?

The ASUS VivoBook 14 X1404 typically includes a Realtek RTL8852BE Wi-Fi 6 (802.11ax) adapter supporting 2.4 GHz and 5 GHz bands. Connect to the 5 GHz band on your router for the fastest Wi-Fi speeds on this model.

Can updating the Realtek driver fix slow Wi-Fi on VivoBook 14 X1404?

Yes. Download the Realtek Wi-Fi driver from ASUS Support for VivoBook 14 X1404. The ASUS-supplied driver version has the correct throughput optimisations for the RTL8852BE chip as configured in this specific laptop model.

Posted

September 16, 2026

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