FWA710 losing connection after fast downloads

I recently bought myself a FWA710 and it have been working wonders so far. But as of today I've lost connection almost 10 times for the past 30 minutes. I can still watch Netflix and other streaming services since it doesn't use that much bandwidth. But whenever I download something on my PC I lose connection for 30 seconds to 1 minute. Also, every time I do a speedtest. I've had some suspicions on the cables, but I can still enter my router via 192.168.1.1 after the connection is down. It's safe to say there is a signal in the cables. I might also add that it's never been this cold outside since I bought my FWA710. -3°C or 26°F. But it's supposed to be able handle extreme weather and even lower temperatures.