There are addons that attach hundreds of children to the Minimap frame.
Therefore by iterating those MBB_OnUpdate is causing a small frame lag every 3 seconds that gets annoying because the textures flicker.
If I change MBB_OnUpdate to only do that iterating once the problem is gone with no apparent side effect at least on my setup.

Go ahead and make a pull request and I'll merge it

Can you give me a list of addons that you are using? Maybe we're just missing an exclusion from the list and we don't need to make this code change.

Thanks,
Ron

Questie is creating 751 frames named QuestieFrameX.
Anyway is there any addon out there that creates a minimap button post launch that would require iterating the children on every update ? I mean something not the consequence of just a setting change that would be fixed by a /reload. On the fly button creation caused by a random event ..

QuestieFrame is already in the exclude list by the way so the frame lag is caused by whatever is done before the check.

Merged. Thanks! Would you like to be added as an author/collaborator on the github and curseforge? I really don't have a lot of time to work on this stuff, I was just trying to keep it alive because I love the addon.