Those numbers have very little to do with which data rate any single client on the network will be able to recieve or send with. Wireless signaling works very differently from cables.

FAT(16) would be a very old file system for a 1 TB drive. Try formatting it as EXFAT or even NTFS.

60-80 Mbit/s is a good practical performance result for 2,4GHz.

iamfritzyg wrote This issue still isn't resolved. :( This thread is mostly riddles in the dark. Have a go at posting a thread with a description of your problem and we might perhaps get somewhere. I...

The settings are the same for the AC/C2300, and yes this guide is what you should follow.

Try connecting with another computer, or a phone/tablet.