I still have this problem after using all the solutions given on the forum.
And it only runs 15 browsers.
Can't go any further than that and it gets the message across.
While I have used browser hiding capability which can run 1000 browsers simultaneously.
@Hifive This means, that you are using action, which needs browser(load page, set proxy , etc) before you created it, or after you delete it.
Here is a project which does what you want