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Lenovo X1 very slow on 5 GHz wifi, normal on 2.5 GHz
Windows Pro 1909. I have a 7 Mbps internet connection to my local ISP. Not great, but pretty good in my rural area. No problem streaming Netflix or Amazon Prime on my TV or old laptop.
I just discovered that my new X1 7th Gen (purchased 9/2019) is running at 1/5 speed wifi on the 5 GHz band compared to the 2.5 GHz band. I couldn't get Zoom video to work, which is how I discovered the problem.
When I put my iPhone SE or a 5 year old Panasonic Toughbook laptop alongside my X1, they both get full speed on both wifi bands. Tested using Ookla on all three devices. So it is not my router.
I keep up with all the system upgrades that Lenovo offers.
Lenovo hardware diagnostics show no problem with my wifi, but those tests are just pass/fail. I can't find any other tests or settings that could apply. Tried posting on the Lenovo community forums but no reply as yet.
Here is the info on my wireless:
- Intel(R) Wireless-AC 9560 160MHz - Success
- Device Information:
- Display Name:Intel(R) Wireless-AC 9560 160MHz
- Udi:IntelCorporation-Intel(R)Wireless-AC9560160MHz-DC:71:96:B8:7A:B8
- Driver Version:21.50.1.1