The audio commentary is a good option too!
Especially the first 20 minutes (all or most of which were the Jim Wynorski reshoots) where Lee is dead-seriously talking viruses, the novel and its inspiration New Yorker article "Crisis in the Hot Zone"
PS and maybe off-topic personal thoughts:
Seriously though if I watched AGENT RED today I might find it actually more watchable compared to some of the stuff we've been subjected to in the past 5-7 years. I was also thinking recently that one of the problems with bad DTV today is that they don't even have the Z-movie exploitation taste that the really bad ones used to have in the '80s and '90s. Today there's none of that, there's no artisanat filmmaking because of digital, no filmmakers rebels per say because they've all been tamed or shunned, no fucking SOUL...
I've never seen any Lloyd Kaufman (Troma) movie because it's not my thing but I know there is soul at what he does.
Many wannabe younger writers/directors in the genre just want to "break it into the business" and what they think is what fans /audiences will take anything with "some sort of action make belief". And they don't watch enough of other movies, indies, dramas, art-house, even comedies, romances, stuff that would nourish not only their cinema tastes but also their work with action / sci-fi / fighting projects.