Massive spikes/internet loss

So while I was quite outdated with the firmware, after the update it was still happening. Even if I am the only one using the internet at the time. It seems to happen when I use a lot of bandwidth at once, like it can't handle the traffic. It's fine when I'm just sitting there on the computer, but when I run something like Valorant or a similar competitive game that is online intensive, the ping creeps up, I lose connection, then re-establishes connection. It doesn't seem like I'm too far away from the router either, so again, whatever info y'all need from me please let me know. I just really want to fix this.