i have a usb wifi adapter it works fine but after a while like anywhere from 10min or longer then a hr or can be hrs before it happens  webpages will take forever to load same with downloads ect but when i disable the usb wifi and enable in again it works fine again other devices like my phone or laptop or nephews pc connected to the same wifi modem work fine even when those device are not connect to the modem i get this problem

when pages do take forever to load ive checked the status and activity sent and received ect everything is working fine

what could possibly be going on