Shader Questions

I have a few questions in regards to the shader files found in the engine folders. I have never written or edited shaders before.

How do I make Lens Flares only have 1 bokeh? I created a cross bloom effect and only one bokeh texture is needed to obtain this, but the other 7 flares cause huge performance issues when using higher bokeh scales, even when given 0 alpha.

When editing the SSR shader file, I noticed that there are no noticeable differences between Numsteps 32;Numrays 1 and Numsteps 1024;Numrays 1. I want to have clean-ish reflections on all surfaces ala the game Warframe, but they always come out blocky no matter how many steps I set it to. There is also weird ghosting happening while moving around.

I can provide screenshots later if needed.