I am using the flex feature to modify a part for 3D printing, but when I turn it into an STL, the STL file has a bunch of random facets? The geometry doesn't look broken since the facets are attaching to random vertices. This happens with hard edges on and off. I am only bending it by 3 degrees and have the Flex accuracy on full. I tried changing the accuracy of the STLs but this does not fix it. I can manually remove the facets in blender, but if I miss any, it makes a mess with in my 3D printer resin. Any possible solutions or approaches?

I cannot attach the part file because it is proprietary.