Good news!
My laptop got the prompt to restart because of an update. I assume this was prompted due to the changes that I took with the creator's patch and other changes, so it was almost like a fresh start when my computer came back on. I started up my game with windowed mode enabled on the Sims 3, and for the first time, my game loaded up with normal FPS. 60 and nothing higher. :)
I am going to see how it works with window borderless gaming on and see if the fps remain like how it should be.