WaitForTargetFPS occurs when vsync is disabled.

Today I faced problem with my android game. I had 27 FPS on device. With Profiler I was able to locate problem. It was WaitForTargetFPS. As always, I just disable vsync on every quality setting, because this works for me all the time. But now this didn't help, so I started to check my shaders, GC, multithreaded rendering... After several hours of ****, I decided to try to enable vsync. And this helped!

I didn't find anything similar to my situation on the internet, that's why I writing this post.
Unity 2018.3.0f2

Also, now almost 50% of load consumed by Present.BlitToCurrentFB, and I can't find anything about that on forums.

But, I have 55 fps on device. My device screen support 55 fps max, so... I think that Device.Present represents vsync.

UPD:
Device.Present happens when Multithreaded Rendering disabled. If enabled, then Gfx.WaitForPresent appears.

 

I have exactly the same problem on 2018.3.12f

 

This is an old post but i have same problem now.

 

Same here on 2019.4.34 I wonder if cinemachine or something in the post processing stack could be the cause...