Critical role is making a ton more than just Twitch revenue.

Also it started out being a side gig but most of them have switched to it as their primary gig. They are starting campaign 3 this fall.

Let's say payroll is half their total costs. Payroll taxes plus income taxes works out to somewhere around 40-60% of the remaining amount. Health insurance is probably in the 10% range per year, leaving them with a $50k salary. Costs are not, of course, quite that high.

As a point of comparison, a talented voice actor can gross around $125k per year, working from home as a freelancer. I don't feel that the Critical Roll actors are being overcompensated at all.

You think an assistant is being paid same as busy TV actors? :)

The most amazing Critical Role fact might be its creation was indirectly financed by Youtube/Google :o. Felicia Day knew all of those guys and about their private DnD game, she invited them to film few episodes for her YT channel "Geek & Sundry". Channel started with $1Mil advance from YouTube Original Channel Initiative, one of the rare if brief successes.

4.8M gross - there is there is all the over head involved in running the business after overheads it will be less.