just disable uAPSD.
yes 5ghz will solve your problem.
I have tested with many 5ghz and I think the dominant chip in this is 5ghz. that's why it works fine with 5ghz.
I have not worked for long times on 5 ghz because I don't
own one.
I don't own one because of the low range of 5ghz.
just google the penetration point of 2.4 v/s 5ghz
The GHz range of a wireless radio only partially relates to the speed of a wireless network. For example, 802.11aWi-Fi hardware runs at 5 GHz but supports the same maximum data rate of 54 Mbps as standard 802.11g network that run at 2.4 GHz.
A 5 GHz network can carry more data than a 2.4 GHz network assuming the electric power to the higher frequency radios is maintained at a higher level. However, some 802.11g network products match and even exceed this potential speed advantage of 5 GHz 802.11a by utilizing a pair of radios instead of one, increasing capacity up to 108 Mbps under the right conditions.
The higher the frequency of a wireless signal, the shorter its range. Thus, 2.4 GHz networks cover a substantially larger range than 5 GHz wireless networks. In particular, the higher frequency wireless signals of 5 GHz networks do not penetrate solid objects nearly as well as do 2.4 GHz signals, limiting their reach inside homes.
So really your home conditions of office conditions depend.
but currently disabling
uAPSD. will work. and make sure your turn off the power management for this device.
I am not happy with the speeds but what else to do.
intel should gift 5 ghz routers to all customers who buy their products ,,, problem solved