Hi there and welcome
Yes it can connect to the 5ghz network as its compatible with this. So setup the 5ghz, and rescan for wifi networks on the TV and it will then see the 5ghz network and you can choose then to connect to this.
If you have continued problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.