I've had a positive experience with a pair of cheap moca adapters to get wired net to a far room in a house with old coax in the walls. Splitters are absolutely

I've had a positive experience with a pair of cheap moca adapters to get wired net to a far room in a house with old coax in the walls. Splitters are absolutely something to avoid. RG6 coax plugs are also notorious for getting right; definitely check all the connections in run if not the whole tree; one rogue strand might be a problem. Try only a straight coax run first to test and then add back all the splitters and other devices.