Consumer wifi routers are cheap because they're neither good routers nor good wifi access points. The consumer routers get overwhelmed when they're faced with heavy traffic (torrents, streaming, gaming, etc) because they have weak underpowered processors and in my experience usually need to be rebooted to get to function again. Even the "high end" consumer routers experience these problems with heavy bandwidth.
I gave up on them a couple years back and built my own pfSense router with a couple PoE APs. If you're not into building a router, you can buy pre-built pfSense router/firewalls from Netgate which includes excellent support. This also gives you a chance to harden your home network, setup VLANs and firewall rules to keep IoT devices segregated from the rest of your network.
https://shop.netgate.com/products/2100-base-pfsense
https://shop.netgate.com/products/3100-base-pfsense
Then buy however many wireless APs you need. I bought a couple
TP-Link APs but
Ubiquiti is also popular.
My home built router is easily able to handle far over 1gbps with IPS/IDS and full VPN traffic. If you're not going to use intrusion protection/detection systems or VPN for full home, the base Netgate 2100 is more than enough for your home, it's low wattage and would last many years into the future.
If none of this is attractive to you and you're insistent on sticking with the consumer grade wifi routers, I'd look for something that would support 3rd party firmware (ie Asuswrt-Merlin, DD-WRT, Tomato). Previously I had Asus wifi routers and once I upgraded the firmware to Asuswrt-Merlin, the performance improved, the router received frequent firmware security and feature updates.