@mc_marto My set up is a bit different. I only have a switch connected to the router, and that switch goes on to my PC, and also to another switch which is connects two more PC's. I tried everything...

@mc_marto is it completely fixed? I tried your solution, I am having the same exact problems, My ISP provides a 500Mbps/10Mbps connection, sometimes i get the full speed, sometimes i'm just stuck at...