Help: Uber Lag when taking damage

In my game whenever the player stands on the object that causes damage to them for a small amount of time the game starts to lag very badly
How do I fix this please help

Do you have a delay when the object takes damage? If you don't then can you post a screenshot of your behavior?

I think you suppose to post this in Ask a Question section btw.

Please take a screenshot of the behavior

need to show the code if you want someone to help you