When shopping for a router/wifi today, also pay a few extra dollars and get at least 2X2 MIMO capability. If you read comparison between the top 5 performance router/wifi's, you'll also see how more sophisticated/faster/and expensive units also can break down individual pathways for different user's. Up to 5 is common. (This means Laptop 1 is on I'll say pathway 1; Roku is on pathway 2, Tablet is on pathway 3; Etc.)
All of these improvements costs more money... But since I usually keep a primary router/wife for 4+ years - I pay up to get a top tier one.
Opinions vary:)!
Best to all,
Smitty