Profiler: What does the yellow exclamation mark in GPU Usage mean?

I'm profiling my game and there's some huge spikes in the GPU Usage profiler. There's around 15ms spent in the 'Other' category, so it doesn't appear represented in the GPU usage list of operations.

I found out that there's a yellow exclamation mark in the GPU Usage tab but couldn't find any info on the forums, and I wonder if that little thing has something to do with my issue. Anyone know what it means?

 

I've got the same problem here. My build settings are Android (GearVR) and there is no way I can make the spike disappear. Even with the skybox, light and geometry removed. The yellow warning sign is a mystery and the time lost on "other" is not explained anywhere.

However, if I build to Android and run a profile, these spikes have disappeared. The warning sign however is still there...

Anyone?

 

I think the warning sign just means that the CPU profiler and the game itself may run slower while the GPU profiler is active.