If you have some simple reproducible steps so that I can test and verify this on my end in a new blank project, that would help me determine the validity of this bug.
As I mentioned earlier, if you modify the framerate max and min, and there are events within your project based on ‘EventTick’, than these events will speed up or slow down depending on what you set as the frames per second. Especially if you use extreme values like 240 fps. Your computer will not be able to run at 240 fps so it will find the cap for your project (70-80 fps) and run off of this.
Thanks,