I've recorded thousands of remote interviews using pretty much all of the popular recording services including Riverside. Reliability and usability are what I pay most attention to since the playing field is level when it comes to recording quality.
With any browser-based recording platform, you are at the mercy of not just the internet/WiFi connection, but also the guest's computer system, including their hardware (processor speed, RAM, and available storage), the operating system being up to date for their particular hardware configuration, and then the browser being up to date.
Google Chrome is no longer my choice for using any video streaming+recording process since it has unfortunately become one of the most bloated and buggiest browsers, taxing both processor and RAM, and not playing nice with system audio processes and USB connected audio hardware (both mics and interfaces). Microsoft Edge is now my browser of choice for when I am recording podcasts via cloud recording services, as well as Teams calls for those clients that prefer that method of connecting. Edge also does a better job of staying up to date, since it is not my primary browser and does not perpetually stay open, which can prevent updates from being made in Chrome.
On a side note, if you have a Mac, Safari is the most efficient and secure browser for basic web browsing tasks and online shopping. And is no longer as glitchy as it used to be. So I do all my other work outside of recording in Safari.
The other glitches that happen on guest computers (both Mac and Windows) is some audio or video routing getting hung up, or their system's RAM being over-loaded. I always ask them to reboot their computer before connecting, which as the host is also essential for me to do with my own computer before initiating the recording session. Rebooting will reset any hung processes, as well as quit any apps that might be open which aren't necessary to the recording process.
Having too many browser tabs open in Chrome is also one of the leading problems when using browser-based recording platforms. Of course, asking guests to close tabs can be tricky.
The other factor is keeping in mind what happens WHEN the connection is lost. No browser-based recording platform is bulletproof. So I always take a second to let guest know that if the internet drops, just to refresh their browser.
I also like to have local redundancy recording as a backup, so my interface is actually a field recorder that records internally to an SD card (Sound Devices MixPre-6 II). In addition to my and the guest being recorded via the cloud service, I am recording my mic directly in my recorder along with the USB audio output from my browser of the guest's audio. This also works if you have a Rodecaster Pro or Zoom F3/P4/P8 or the new Tascam FR-AV2. The guest audio should be better from the cloud service since it is being recorded in their browser's cache on their computer and uploaded, and an unreliable internet connection will cause their audio I capture on my end to be lower quality. But the recording of my own mic in my field recorder is slightly better than the cloud recording (especially since it's 32 bit float). But most won't hear the difference.