The wifi in the GF is horribly finicky. I purchased an Orbi mesh and made a dedicated channel (2.4Ghz only) just for the GF that solved most of the issues I’ve had. I also discovered later that my Apple TV would interfere with it so I keep it disconnected unless I want to watch something. Move everything you can to 5 Ghz too, the GF only uses 2.4, so many things can interfere with the 2.4 channels.