PS5 keeps losing connection

I’ve been fighting connection issues with my PS5 since I signed up with xfinity. I have an XB6 xFi gateway. I’m able to connect to the WiFi, but initially I had trouble connecting to the internet. After setting the DNS to google’s (8.8.8.8 and 8.8.4.4) and assigning it a static IP, I seem to be able to connect to the PlayStation store, download games and updates. Using WPA2, NAT 2. When I do a connection test, I’m getting great speeds (pay for 200 mbps, almost always higher). 

Unfortunately I still cannot play or chat online reliably. If I’m lucky I can play for about 30-45 min before getting kicked. Sometimes I can’t even play at all. When that happens, i just switch to my phone’s hotspot.  

All other devices connect just fine (phones, laptops and tablets) and work great. I’ve also reset my gateway, renaming it, changing the password, and connecting the ps5 to it first. 

I had no problem connecting it to an AT&T router, or my phone’s hotspot. Seems xfinity is the only one it won’t connect to. 

Anyone know if there’s a special setting I need to adjust?