BTW, someone already mentioned this, but can you use Ethernet cable instead of WiFi?
The 50Mbps is your total max internet speed, but WiFi will never be as fast as Ethernet cable (Cat5, Cat6).
I have AT&T 1,000 Mbps internet, but even with Cat6 Ethernet, I'm seeing around 500 Mbps. Then when I test WiFi on my iPads, I'm seeing 30 Mbps.