I use a HP Stream for my TV streaming computer. It came with windows 8.1 w/bing but I updated to win10 as it was free. I now cannot do windows updates due to the SSD being to small(32gb) and the Ethernet port wont work(have read that it can be a fault with win10) I am contemplating going back to windows 8.1 if it is possible, but before doing so am wanting to know what OS is less draining on resources?