Windows 10 (H0H2) automatically changes from 5GHz to 2.4GHz without user input.
Windows 10 (H0H2) automatically changes from 5GHz to 2.4GHz without user input.
HP 840 G3 laptop equipped with the newest Intel drivers via Port Replicator. Features include dual monitors and internal Intel Dual Band Wireless-AC 8260. Runs Windows 10 Pro H0H2 (not 21H1). Netgear R7800 model, version 1.0.2.82, recently updated within the last 2-3 weeks. Uses a single SSID on 2.4GHz (Channel 8) and 5GHz (Channel 153) with custom channel configuration. No issues reported. Laptop stays within 8 feet of the router. Connected through a port replicator for two years without problems. Sleep mode remains off, screen saver active. WiFi power saving mode is disabled. Recently observed fluctuations: sometimes connected to 2.4GHz delivering 80-90 Mbps, while at full 5GHz it drops to about 590 Mbps due to proximity. Despite attempts to disconnect/reconnect or reset settings—including Winsock reset and network reset—the issue persists. Forgetting the network and reconnecting with password works but then reverts to 2.4GHz unexpectedly. No clear cause identified yet. Any suggestions would be appreciated.
It's possible a nearby resident installed a new 5GHz router, and the previously available channel is now crowded with interference, causing your system to believe it needs to move to the 2.4 GHz band.
It seems the frequency changed to 2.4GHz recently, and you've been using your computer for most of the time. I've shared this in other forums too. @Kilrah, it doesn't look likely. You're the only one at 153 while everyone else is at 48.
RA is medium and I’m avoiding setting it to 5GHz since I might need to revert if only 2.4GHz networks are available. I’d rather identify the issue first. I’ve attached a file from Intel’s System Support Utility, which you can review if helpful. 2. It’s a Netgear R7800, but with limited options. I’m not sure about DFS. 153 was suggested by WiFi Analyzer a few years back and it performed perfectly. I haven’t faced problems with an older R6000 now compared to this newer model since April 2020. 2021060701 HP EliteBook 840 G3 System Info from Intel SSU.txt
I noticed a network warning in Event Viewer. The message indicates missed beacon signals from a BSS. Spoke with an Intel representative about it.
No situation I know of calls for channel 8. Typically, only channels 1, 6, and 11 are recommended. Using others can cause interference with other networks, leading to reduced performance. A NIC switches to 2.4GHz only when it detects a weaker 5GHz signal. I prefer not to rely on this and maintain separate SSIDs.