Ping spikes during the day!

For the past 2 weeks i've been experience high ping spikes. During the morning it's a steady 20ish ping but right when it hits around 5 in the evening, it'll start hitting 100+ every 10 seconds.

With all that said, my speedtests are perfectly fine. Getting the down and up speed I should be getting. 

I'm in South Vegas area! (Henderson)