So, if you’re doing a GFX with Paint RIG then you must use R6 as the Rig will make it work like R15.
If you want to make good looking GFX renders then I’d definitely recommend using the Paint RIG for that you have to use R6 character.
Trust me, it’ll look great.
Here’s an example of a R6 character made using a Paint RIG:
As you can see in the picture above, it looks great with the rig, it even makes it look better than normal R15 Rig.
I hope you get what I mean.
Thank you!