1. Get wired. No WiFi and turn off WiFi on the router.
2. Do not share that router. It's yours, you are gaming.
3. You didn't mention the OS but I do encounter gamers with antivirus suites that induce lag as they inspect packets. Get stock.
4. Drivers. Do not rely on Windows. Do this the old fashioned way. Do not use a driver finder.
5. Share a web speccy report so others can see if there's something else going on.
Read how to share at https://www.piriform.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web
6. Consider a gaming VPN. https://www.google.com/search?q=nord+for+gaming+vpn for example.
So I play games on PC. I get about 400 down and 20-30 up. When I run a ping/speed test to a local server, I get great results.
No matter what PC game I play, I always lag. I always have the highest ping in any given lobby, and it sucks.
I have theories why.
When I run a tracert to google (8.8.8. for instance, I get kicked from a florida node to somewhere in the midwest around hop 6 and my ping goes from about 20 ms to 100 and stays nice and high the rest of the way.
This may explain why games set my default servers as west coast when I am in florida.
Can anyone give me more insight into this issue? I can provide more details if needed. My ISP has been less than helpful on the several occasions I've contacted about this.