Diminished effects in final rendered Adobe Premiere Pro CC video
Are you layering the ProcAmp Filter onto the same clip?

It's possible theres a bug with that... there are bugs. 

You could try taking your base clip and putting it on a sequence. Add your ProcAmp. 

Then right click the sequence in your Project window -> Create New Sequence from Clip. 

Now you have a nested sequence of your original. 

Try applying the ProcAmp then to that "clip" which is actually a nested sequence. 

The results should appear the same, but you wont be applying the proc-amp to the same clip, rather, each nested sequence will have its own. 

You can repeat and re-nest etc. 

Secondly, you might just be better doing the effect in after effects, and using dynamic link to bridge the clip in. It acts much the same way but will add render time.