Again thank you kindly for your replies.
I will look into the recommendations for the network card settings when I get home.
About the motherboard: you can probably have it replaced by a board of the same type without any additional cost. I would try that first, unless you have a good reason to assume that your motherboard problems are caused by Linux.
I know for a fact that the issues I am experiencing are not due to Linux, however a malfunctioning board. The company that sold the board to me is not willing to exchange or give me credit, so I was just seeking the guidance or recommendations from the community.