Most efficient way to turn on and off many stationary lights at once?

Development Rendering
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1

The title says it all. I have a level with about 150 stationary lights that I must turn on and off all at the same time. I see some simple ways of doing this but I’d like to know what’s correct way of doing something like this from a performance-wise viewpoint, I don’t want to have an fps drop because of this or at least limit the “damage”.

2

Store the actor references on begin play in an array (GetAllActorsOfClass?) then iterate that when you need to work with the lights. If the single frame performance dip is a problem then distributing the work over several frames is a trivial task this way too.

3

Would it be possible to make it an asynchronous thread?

4

Opps sorry, I missed the C++ label so what I wrote was meant for Blueprints. I don’t know how the base idea applies to C++.

5

Thanks for the input. I might just use BP for this if I don’t find a more efficient solution.