WiFi drops over 2mbps in download

I am having a problem with my wireless network in my home. Whenever download speeds over 2mbps go on for over a minute or so, the whole wireless network goes down for around a minute and boots back up. The wired connection works fine during this time. The Router I am using is a Netgear R6200 and it is broadcasting dual-band up to 300mbps and 800 mbps respectively. The drop in coverage happens regardless of which band I am using. Does anyone have any thoughts or possible solutions?

My speedtest numbers are 33.09 mbps download and 6.04mbps upload.