Hi.
I have been on the forum reading the replies, and trying them out to see if they work. There are so many good suggestions! But the only solution for me was to go to to Device Manager; Network Adapters; open your router, click Power Management tab. If the box "Allow the computer to turn off device to save power" is checked, uncheck the box, click "okay". For 2 days I have had a stable connection without drops to Limited, so I hope this continues to work.