mITX build with Gigabyte z97n-WIFI with onboard intel dual band AC 7260 in an mPCIe slot. I also have a netgear R7000 router. I can't get the thing to connect via 5GHz AC, only via 5GHz N. Speeds hover around 27Mbs as well. I've turned on WMM in the intel client, as well as thoroughput booster. Did nothing. I've updated to the latest Windows 7 64 Proset drivers for wifi and Bluetooth. Still nothing. Any pointers?
Could you please try the following configurations by accessing advanced settings on the card and the configurations on the router?
Preferred Band: Prefer 5.2GHz band
Fat channel intolerant: Disabled
Roaming aggressiveness: lowest
Throughput enhancement: Disabled
Transmit Power: 5. Highest
Wireless mode: 802.11a/b/g
HT mode: VHT mode
On the router, you could try different channels
Auto channel scan: Disable
Set router Channel width to 40 MHz (mixed mode) try channels 36, 44, or 48.
Enable WMM (Wi-Fi multimedia) settings
Let us know if this helped you.
I tried all this but couldn't get anything better out of it. I got a sweet deal on a new MB though, and this one has a Broadcom card on it. Still having some trouble, but better speeds than before. Regardless, thanks for the help.