Game only at 15 fps since the update

My game ran at a stable 40 fps before, but since the update it is running between 27 and 15 fps.

What is going on? The game is actually unplayable for me in this condition. Will there be a fix soon?

Have you looked at the known issues at the top of this forum to see if your issue is listed there? Are you using Razer Chroma devices?