Improving Lensflare Performance on HoloLens

Hello,

I'm currently developing a simple visulization scene. Inside this scene I have a UV-type light which shall have a UV-blueish halo and a overbrighten center spot (in the middle of the light). This "light" does not actually need to light anything it shall operate as a nice effect. Now I found a lensflare object to be quiet what I like, however once I run this on the HoloLens I get a 50% frame-rate drop. (from 60fps to 30fps). I tried reducing the resolution of the base image and so on, but I did not succeed in improving the lensflare perfomance on this platform.

Does anyone have suggestions on how I can get the lens flare to render in the proper speed? Is there maybe a better perfoming alternative that I can use instead of the standard unity lens flare? Any help is appreciated. Thanks!