I haven’t played GTAO in a couple years, but I vaguely remember using the suspend process option of windows task manager to jump into online much faster.
Googling gave me this result, which sounds about right for what I remember. https://www.gfinityesports.com/grand-theft-auto/gta-online-h...
I’m not certain it’s still a valid workaround, and it’s not nearly as sophisticated as the OP method, but at least everyone can do it :)
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