There's nothing "bad" about Stopmotion and I enjoy Aisling Francoisi as a genre actress but there's nothing very interesting or new here. Beyond the cool imagery (which certainly borrows from Dead Ringers and Videodrome) there are 100 other movies with an identical plot and progression and ultimately Stopmotion is just kind-of ends up being a boring and joyless trip down that familiar path.
You could just watch the director's other work to appreciate the macabre art style instead of watching this and probably end up being more satisfied with the viewing experience. I didn't dislike Stopmotion, but it's pretty forgettable.
