Huge "other" in Gpu Profile !

For me it was the Editor rendering, solved by making the Unity editor very small.

Compare it to an empty scene. I my empty scene, "other" was still maxed out, indicating that is linked directly to VSynch of some description.

I'm gessing there is not much stuff going in your scene as everything but the "other" stuff is taking about 1 ms to process. I dont know what the "other" stuff is, but since it's taking only 3ms to process, i would not worry too much about it unless your FPS gets too low ;)

Other may be garbage collection or stuff being recycled in memory. 32ms is acceptable, you should only complain if the other peaks above 100ms and/or causes hitching.