The answer is 1000x NO.
I have 25mbps, cut the cord, have everything connected. My games don't download as fast but I can knock out a 50gig game in about an hour. Tv/tablets/etc experience no drops, everything is in HD.
Netflix and Xbox live require 1.5mbps for gaming. I believe Netflix needs like 4.5mbps for HD and 25mbps to stream 4k
This shyt is all a scam tho, why you think we rated so low in the world when it comes to internet? Because these companies wanna sell you the same internet over and over again. Raising the speeds justifies raising in their eyes. We could all have 100gbps but how could they keep charging you full price if they did that?