GIF lose animation after smushing

I have Smush Pro activated so when I upload a new image it gets compressed. But I have an issue with some images I DO NOT want to be compressed because they are animated GIF files I use (2 of them) on my sliders.
My slider plugin only accepts images uploaded through their BROWSE/GALLERY etc.. so every time I upload this image it loses it animation and I think it has to do with the compression