@Kevin_Z Thanks, Kevin. I've just had a new router installed by cable company and was warned not to change any settings for the First couple of weeks, so will try this later. I did find that if I...

I've just bought a T2U Nano adapter and installed it on my Surface Pro 3 running latest Win10 with all updates. With the inbuilt adapter, I could force it to only use the 5GHz band of my router: how...