Separate router vs. modem's built-in router
I was surprised at his surprise -- my default assumption was always that a standalone router would outperform the one built into the modem. Apparently this is no longer the case, and I would get better speeds through the modem's own router functionality.
My service is 150 Mbps so my router (a mid-range TPLink) is very unlikely to be the limiting factor in speed, and I use a bunch of fixed IP addresses on my LAN that would make switching a pain, so I decided to keep the router. But I'm wondering about the technician's statement, and at what point I would want to just ditch the router entirely?