Best Auto Rig that can be used for games?


I have to create some rigs that the final animation will be exported in.Fbx to be used in unity and construct. I was using advanced skeleton, but I had several problems with the face, it didn’t work well. The body rig works fine. Someone can recommend a good facial auto rig? I also tried to not use the face section from advanced skeleton and just create joints for the face setup, but it didn’t work I’m having symmetrical problems, one side of the skin is completely weird and kneaded.

Should I start from scratch with another auto rig? or should I try to find a way to make the facial rig works?