CW is a moderately successful TV network with a moderate budget funding all these expensive superhero shows. It doesn't surprise me they cut corners on the one that requires the least amount of special effects. I think this is part of the problem. How much of a budget do they have to churn these out? Flash, Supergirl, LOT, and Stargirl all require pretty big budgets for their SFX. Throw in S&L and you've got five shows that require expensive effects. Maybe the problem is they have too many shows they can't afford to make. Even the Batman suit looked like bad cosplay. And don't even get me started on their Batmobile. Even shows like Flash have had CGI problems the past few seasons.