so i just got a new router from tplink, and it worked flawlesly. but now after about 1-2 months of use my wifi is so slow. we have and laptop and my gaming pc connected and both have around 2mbps speed. i didnt have a modem or ethernet, so i used our old router wich supports sim cards. so i connected my new router to it and it worked flawlesly. but now the "modem router" wich supports sim cards is super slow wich causes my problem. the routers are super close to my pc. about 1.5 meters. netflix on the laptop works really well but you can barely watch youtube videos on my pc.