Consistent network disconnection only when attempting to play games

I've been dealing with persistent network disconnections that only occur when playing online games. This issue has been ongoing for about four weeks and has become increasingly frequent. While gaming, the router intermittently loses its internet connection, but the connection stabilizes once I stop playing.

I'm using a wired connection to my router and have attempted multiple troubleshooting steps. I've reset the router both via the recessed reset button and by unplugging it, but neither method has helped. I even upgraded to new Cat8 Ethernet cables, yet the issue persists.