I am lagging in a way I've never seen before

All units move super slowly on my screen and randomly teleport. Interactions with other units cause instant teleportation. Most attack/ability animations are inconsistent with movement, and for the most part it acts like I might expect if I were playing with 20 fps and 500 ping. The shocking part, is I'm playing with about 200 fps and 50 ping. If someone can explain, that'd be great. Thank you.
Report as:
Offensive Spam Harassment Incorrect Board