please help! i need this for my office!

@Tony I tried all these methods last night while i was talking to technical support. They couldnt find an answer for me and said someone would be reaching out.

My 5ghz is getting about 250 mbps and my 2.4ghz is getting 1-2mbps and cuts out completely at times. Have pretty basic settings. 1 lan connection to work computer that's running a vpn. But do need...