PS5 Terrible Wifi connectivity

I've been experiencing awful speeds with Wifi connectivity. I didn't have these issues on my PS4 and I've tried rebooting the router, deleting and reconnecting to my wireless network on the PS5, Changing the wireless channel on the router. I can't connect via Ethernet as it's not an option. Has anyone else had this issue?

Not at all. I have gig-speed ethernet from Comcast and can stream movies in 4k with no lag. Even Disney+ which gave me fits on the PS4.

I just have the Ethernet cable plugged in and never had issues with my connectivity.

No issues with mine. Personally the PS5 wifi is a revelation at compared to PS4 and is still performing well now. If you having issues it is better to get in touch with either your internet provider or sent it to Sony.