Dedicated Worker Memory

Hello,
I have hundred glb files need to download and push them to viewer.
Althought I don’t know much about worker. But I think I should built a worker file to get token, download and send to loader render object on main thread.
The problem is memory still too hight after loader finish render.
At the end of function in my code, I put terminate already.

} finally {
workerWrappers.forEach(worker => worker.terminate());
}

I dont know what they are and how to stop them.This picture I check on browser task manager.

Thank you.