I'll third what goofygrape and ggreen said.

I'll add that Filament could be/should be more of a go-to renderer. Actual Filament is a lot more capable than the Daz implementation. And, of course, it's instantaneously fast. That makes it a wonderful asset in my book.I should probably buy some of the Filament enhancement products. Haven't got around to it.

Also, you can control the brightness of a Filament scene by going into Iray preview for a moment and then using the tonemapping exposure slider in tonemapper options to adjust the overall lighting. The base setting is 13. Smaller numbers brighten the scene, higher numbers darken it.