Since the latest patch, the FPS seems to drop quite significantly when opening the temperature overlay. Normally I am getting about 30-35 FPS when playing, with the temp overlay open it drops to about 20-25 FPS. I don't recall the performance being quite this bad beforehand.
Attached is my save. Could it just be this particular save file? I also am experiencing FPS drops and stuttering after launching a rocket, which doesn't occur in other people's save files it seems.
Open the temp overlay on a well-developed colony.