Hello, I recently bought a tplink ax20 1800 router, and i have fibers with 600 download Mb plan, I had the fiber company replace their router with an adapter so I can use my router instead, everything seems fine except that the speed of the 2.4 band is not going over 100Mb, but the router specs indicates that the 2.4 band will support up to 600 and the 5 band will support up to 1200, I'm wondering what could be the problem, the 5 band is ok and going to 600 or less if not close to the router. could there be some setting I shoud change. thx