The best way to see if it’s your router/laptops wifi card is to tether your phone via usb and run your laptop off that for a couple of rounds. If this fixes your issue (which I’m certain it will) you’ll know that the problem either lies with.
wifi card (this could be as easy as updating your driver) if it’s not the driver buy an inexpensive 5ghz wifi dongle.
router (doubtful)
ip address conflict (which you can sort out in cmd with a quick ipconfig\release \renew command)
👍