Static Distance field for meshes are generated by default for some benchmark. How to disable those Generation?

We are trying to measure the performance of benchmarks in Linux. For few benchmarks we found that there are some mesh distance fields are generated and cached in Unreal engine folder for first few runs alone . Inorder to compute the performance without caching, we tried to stop those generating distance field by following option in UE4Editor
Open the Project Settings window by going to Edit > Project Settings , then select the Rendering section. After that in lighting part unchecked Generate mesh distance field box. Seems its not working still the data are cached. Do we have any other option for stop caching this in editor?