Plan Upgraded to 100Mbps but getting Wifi (5Ghz) speeds at 30Mbps (Router: Netgear AC1200)

2 days ago my plan was upgraded from 25Mbps to 100Mbps. I contacted xfinity support and they told me to wait for 24 hours for the changes in the speed to appear after rebooting the router (unplug for 1 min and then restart).

However, I am getting Download speeds of 30Mbps on the 5Ghz Wifi network setup on it

Router: Netgear AC1200 

I have tried factory resetting and the speeds are still the same. Tried to get in touch with xfinity support again via chat, but the bot (xfinity assistant) won't let me due to Covid response as it's not a priority. 

Anything I can do ?