Question Profiler Others section having spikes

Hi Guys,

After I improved graphics in my game, I found some performance issues in the editor when profiling, I can't understand what the problem really is so thought it would be better to ask for some help. As Always I hope you guys would save me..

So I have attached some screen shots of my profiler and a shader graph,
As they have been named, two screen shots are for the "others" section in the profiler while the Unity Remote was connected and Not, one is about Rendering. Other one is the custom shader (Sprite Lit) I made with shader graph to make my sprites glow. Almost my all sprites and 2 particle systems(they are the only ones) in the scene use this shader. I also have some bloom to make it look better.

So guys, what do you think would be causing these spikes in the others section?

Do notice that some times it runs over 100 FPS according to stats menu in the play mode window, but some times its belove 20 FPS ( I also attached 2 screenshots of editor play mode with Unity Remote attached and not)

I also have some post-processing effects (Bloom, vignette, panini projection, color adjustments)

I also tried building it and playing in my phone, I didn't have any FPS displays but it looked and felt fine.

So my Questions are,
1. What could be the reasons to have spikes in my profiler for "Others" section
2. If you know, what could I do to fix them
3. Could my shader cause performance issues

Every one of your ideas are appreciated...

 

Thank you