are they together or 2 pcs and same thing happening? for example for league of legends did you recently had an actualization of the software? it might be some changes in their graphics engine
They are together, as far as I know this has happened only today. They did have a change in their graphics engine which was a few days ago but these "spikes" never showed up until today. I don't get artifacts ,for now at least, but just these weird "spikes" in which 3d models have one part of the model sticking out.