First off I love this game. It is rough around the edges, but still fun none the less.
When Jason Shifts and Morphs to a location it would be amazing if ther was some sort of mist / fog effect to help hide the popping. I know there is that buzz tv look that helps hide it which is a nice touch, but it doesn't always hide that. You can be in a distance and see Jason disappear or reappear and looks very odd. It would be a nice touch to add to the game to make it feel less glitchy. They did this in Mortal Kombat X and I thought it was a clever way to show him come out of nowhere.