Poor performance on 5Ghz

I just bought a dual band USB Wifi stick. It took me a while to get both bands to connect on my Win 10 machine which has the drivers already for the stick.

Problem is I have a few Wifi Items on the 2.4Ghz band so was trying to connect my desktop to the 5ghz band as there is only the TV thats connected on this band. But it connects around 162mbps on the 5ghz band but after a few hours the rate drops to around 13mbps and browsing the internet becomes sluggish. No such problem on the 2.4ghz band stays a constant 216mbps.

Is this a problem with the USB Wifi stick or interference. TV connects at 162mbps constant on the 5ghz band!

Edit: Just tried the 5ghz band on the desktop again and Win 10 says "Unable to connect" but 2.4ghz is fine. What gives this is the problem I solved yesterday.

Edited by Banger (Sun 16-Oct-16 13:39:54)

I'm currently struggling with a similar problem. Try this http://www.sysprobs.com/fixed-windows-10-limited-con...

That fixed not being able to connect the 5g network but its only connecting at 14m according to the router, I had it at 163m yesterday but having difficulty today. Are you getting this symptom too?

I can't connect using DHCP. I have to enter IP information manually - ip addess, subnet, gateway, DNS.

Other devices are fine

Every time I connect to 5g I have to enter the netsh commands or I get unable to connect and the maximum speed I seem to get now is 48m but no problems with 2.5g @ 216m, it just works. 5g signal is a few db lower than 2.4g according to inSSIDer. Wonder if thats the problem, or my Asus router isnt as good on 5g.

I don't know directly the answer/s to the problems raised; but I have taken several comparative surveys of the two WiFi bands in and around my house.

Typically, the 5 GHz band is -10db (10 db lower/worse) than the 2.4 GHz band.

If the 2.4 GHz band is -55 db, the 5 GHz is -65 db.

Using inSSIDer on the same ACER Laptop, at the same locations.

The other end is an EE Brightbox 2.

5 GHz signals are more readily attenuated by structures etc, apart from any more technical differences of the WiFi modules etc.

The few 5 GHz items I have, connect etc as readily and without problems, as the 2.4 GHz majority.

Thats what I am finding. The dongle max rate on 5g is 48m, yet my TV also on 5g connects at 162m in the same room. Have ordered a different make of dongle to see if it is this dongle.

The signal strength can vary considerably in different parts of the same room.

I am also checking over an extended period, a 2.4 GHz Repeater, which appears to lose the primary signal when the Humidity rises.

An empty typical metallised crisp packet placed in an adjacent waste basket can also cut off that primary signal.

There is a location in that room where such losses probably would not occur; but it is awkward to reach, also mains supply problem, so in the meantime, it is interesting to observe the variations.

5 GHz is generally more critical.

Tried changing the wireless channel manually?

The drop in negotiated speed may indicate additional interference.

Overall though 162 is a poor negotiated speed to begin with and suggests the signal may be too weak (assuming wireless AC1200 which is basically standard now on all major ISP routers).

Have you considered a second AP?

What channel would you suggest? I now have the usb stick directly above the router antenna and the max rate for 5g is 54m, 2.4g is the full 300m.