so you can play on a higher fps
You do realize that your monitor is not capable of displaying an infinite framerate, right? Above your monitor's refresh rate, additional frames are actually detrimental due to screen tearing. So to recap, lowering your settings to get 250 FPS does the following:
1. Reduces graphics quality
2. Introduces screen tearing
3. Does not improve framerate or fluidity
So I reiterate, what is the point of doing this? What you are suggesting carries literally no benefits. None whatsoever.