180ms spikes in physics.processing. Game runs @ 100fps otherwise. Nothing complex going on in the scene at all - 2 active RBs and 93 static colliders. Turned solver iterations down to 1. This kills the experience, random long freezes occurring every few seconds. This along with the "5/11 clustering" issues means I'm forced to revert to unity 4 to finish the project.

This isn't fixed. My game experiences huge spikes due to Physics.Processing (90%) running Unity 5.2.3p3. I don't use 3D physics as it's a 2D game built to run on desktop computers. I have no idea how to tackle it.

Unity 5.3.2f1 - Unity Editor I am getting random spikes in my 2d game. Sometimes upto 90ms. It is in editor with PC settings.

Sorry, meant 5.3.2p4

Still happens in 5.2.3p4 (in editor, PS4 platform set)

Same here. Unity 5.3.2f1 on Galaxy S4 GT-i9505 Android 5.0.1

Same issue with Unity 5.3.1f and Lumia 1520. :(

A simple scene with only a canvas and UI objects

I came across spikes problem on Unity 5.2 desktop.

Could not get rid of spikes, but at least I could minimize their height and quantity by disabling all of the layer intersections in Edit -> Project Settings -> Physics 2D -> Layer Collision Matrix.
And I've turned off most of collisions in 3D physics (for layers like UI, water, FX and ignore raycast) btw.

Same here for desktop build.

I'm STILL Experiencing this in Unity 5.3.0f4 This is extremely obnoxious and I can't seem to isolate what is causing it! Enormous spikes even when nothing is running in my scene.