When I play Smash 4 online, it lags badly if my laptop is connected to wifi. If I disconnect, it's smooth again. Possible causes of this?

I have no viruses (at least I checked the best I could). I'm not sure where to go from here. Any suggestions would be appreciated.

Submitted December 01, 2017 at 04:42AM by VyseTheFearless http://ift.tt/2irN9df