Hi, I have a TP-Link Archer T4E in my pc, which says is capable somewhere around a gigabit connection, and my network plan is currently 50mbps, however I'm only getting around 30mbps down and 3 mbps up. There are a couple walls / interferences between my pc and the router, however doing a speed test on 2 phones and a laptop, they are all maxing out at 50 down and 50 up. Is there an issue with my wifi card? I've tried both 2.4 and 5 ghz, both are ~30 down ~3-5 up. Any help is appreciated, thanks!