Are you getting 50Mbps when connected directly to your main router? If not, then try rebooting everything

Have you tried setting a static IP for the computer?

Have you tried doing a ping test? Open command prompt and type "ping" without quotes and type a web address. If it succeeds then try clearing the cache for your browsers. Also check that the...

Try turning your PS4 off and unpluging the ethernet cable. Turn ALL other devices connected to the router on. Then turn the PS4 back on and when it's booted up plug the ethernet cable back in and go...

If you are having difficulties with running the utility you can try running it in compatability mode by right clicking the icon and choosing the options menu. Go to the compatability tab and run in...

Check which port you are connecting the extender to. Some routers don't like it when you use, say, port 4 if port 1 isn't being used. I found this out with my VM Netgear router