Automotive interior renders

Hello Community,

I have been trying to render the interior of car using automotive interior materials but the leather and other materials of interior comes very smudgy and looks like they are melting. I have tried all the lighting settings to see the difference but there is not much.
I am attaching some of the renders of the interior please have a look at it and let me know if there is any possible solution to it. Thank you in advance.

How do you know the lighting is incorrect? What are you comparing it to?