Spiffs Files System VS SDFat - application is ~25K Larger with Spiffs

We’re building a project that supports both Spiffs or the SDFat driver depending on our hardware configuration. The SDFat version of the code is about 25K SMALLER than the Spiffs version. Both work as expected.
I’m guessing we have something set wrong in the Spiffs config - @rickkas7 any suggestions?

John