MFJ vs MFS with one working spouse and large LTCG

(I have learnt great deal from this community. Thanks ahead for responses)

We have been filing MFJ with 2 dependents for all past years in CA, this year we are thinking if MFS will be beneficial because one spouse is not working.

Spouse 1: W2 income: 500k

Spouse 2: W2 income: 0

LTCG (joint accounts) : 80k

Dividend + interest: (joint accounts): 40k

 

If MFS, Spouse 2 will get a lower LTCG rate and no NIIT, given this situation, is it better to MFS since we were not eligible for all the credits allowed for MFJ due to high income?