This issue first surfaced when my internet carrier (SuddenLink) raised my download speed from 15 to 30 Mbps and I notice almost no difference in daily surfing. Ergo, I wonder at what speed I would notice a difference.
FWIW: My first modem was a 300 baud dial up...
Harv 27" i7 iMac (10.13.6), iPhone Xs Max (12.1)
Those who can make you believe absurdities can make you commit atrocities. ~Voltaire