Whenever i play PC games upstairs i tend to get random ping spikes which is really annoying but downstairs in living room it is fine. Same download and upload speed. It happens on both 5GHz and 2.4.I have vivid 100 Hub 3. I think maybe it is because my router hasn't updated or something idk but I cant cant update it anyways since i tried turning off router for 5 mins and didn't work.
What you might want to do to keep an eye on it is to set up a Broadband Quality Monitor (BQM) for your line. It's a free service and will help you (and us) to see if there's a problem with your line rather than a problem with your Wireless connection.
Once you've done that, leave it to run for a while, and then you can share a "snapshot" of the graph with the support forum. If the graph comes back relatively clean, your issues will probably be the result of a poor Wireless connection. Remember - Wi-Fi is not magic! It won't be as reliable as a wired connection, especially for gaming.