[ohwaitnvm]

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 :)

[dEnigma]

I had to use this trick to kick GTA Online back into action when it got stuck forever on entering buildings (mid-2020). Didn't know it could be used to cut the load times in general.

[pityJuke]

I remember doing this to create a private online session (i.e. no other users).