I installed this RT-AX88U Pro router about a month ago and connected it to my gigabit Internet. I appear to be having some WiFi problems. On a laptop that's on a different level in my home, probably only about 50-60 feet away, it sometimes has problems playing YouTube videos. The same thing happens when I'm using Microsoft Teams. They sound like a bad cell phone signal. It has these problems no matter if I'm connected to the 2.4 GHz or the 5 GHz network. I've even tried using an old Asus router as a repeater, but that wasn't any better. How do I fix these problems?