Mass Turning LOD Groups Off

Hello everyone, hope this isn't a silly question but I have a large scene that uses LOD groups on various game objects. I want to turn them all off to compare the performance. Do I need to manually go through each game object and turn off the component or is there a quick way to toggle all off? Thanks (Hope I'm asking in the right place)

 

I'd try FindObjectsOfType and then iterate through the returned array.

https://docs.unity3d.com/ScriptReference/Object.FindObjectsOfType.html

Or if you have a specific script on every object with an LOD group, you could disable it in Start.