Lag every 3-5 seconds

While loading up and playing the game every 3-5 seconds i get something like a lag spike for a second. Here is a video of what happens during game play. https://realtimes.real.com/s/Emq8i0?lang=en&email=share. I am playing off of steam and I have googled and tried all kinds of different fixes. It worked one day then suddenly I tried again later on in the day and it did it again.