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Google Releases Fix For Chromecast Wi-Fi Crashes (zdnet.com)
An anonymous reader quotes a report from ZDNet: Google on Wednesday said it will release an update Jan. 18 to fix a bug in Cast software on Android phones that dramatically slows down WiFi networks. Reports have been circulating this week that the Google Home Max speaker can knock the TP-Link Archer C7 router offline. In a support page, Google explains a bug caused the Cast software that connects with Chromecast devices to send a large amount of network traffic routers can't handle. Google said the update will roll out via a Google Play services update. Until the update is released, Google advises users to try rebooting their Android phone, and check that their WiFi router is updated with the latest firmware. Google didn't list specific routers impacted by the bug, but reports have indicated routers from Linksys and Synology are seeing network crashes as well.
#2 is a bigger problem, but realistically home routers were never designed to do those types of things. They aren't capable of doing full wirespeed packet inspection, and for 99+% of the homes this works fine at a fraction of the cost.
The obvious solution if you need to do wire speed packet inspections, have huge routing tables, and rock solid stability, then buy a router designed for business use. Unfortunately those are MUCH more expensive.