animation resample curves and optimization

Hello. I'm trying to import character animation for our new game project, but animation look little strange.
I think it's because of Unity resampling animation curve.
I can just turn off the Resample Curves, but I'm worring about the optimization.

Question : If I turn off the Resample Curves, will it be a problem?
Like, file get bigger or hard to read in unity.



I apologize because I'm newbie so I couldn't give you many information and my terrible english skill
If someone know about this please help