I didn't read all the comments, so excuse me if someone has already said this. But I'm on 3 mgs of invega and it has caused eps symptoms for me as well. When I get anxious, my lip kind of rolls in my mouth and I get horrible tremors.
I'm on 3 mgs of cogentin and 40 mgs of prpinol I spelled that wrong sorry. But they do help. Ubut something that is the most bothersome is the blurred vision from the cogentin causes that.
I stay on it bc it has taken away my period and I have really heavy periods and a lot of cramps. I have a lot going on in my personal life. Hope this helped you!