That is very unusual as I don't recall putting two catapults facing each other. Once my computer stops being stubborn, I'll look into it
It would require going into your graphics settings and changing the max fps from there.
For example: if you have an Nvidia, you would open the NVIDIA Control Panel, then go to Manage 3D settings > Max Frame Rate.
It's not a solution I like, but until I am able to access my computer to patch it, it's the only way right now.