Issue with Wi-Fi

Recently I have been getting ping spikes on Wi-Fi while playing games like League of Legends, I've never had this issue before. It would spike to 200ms-500ms every 3 mins. I do not have this issue with ethernet. Should I contact Telus Customer support or are there some steps I should do first?

(I pinged multiple websites at a time using Pingplotter and all of them spike at the same time. I ran Pingplotter on my other computer which is hardwired and did not spike at all.)