This is how to play Old GTA Online on RPCS3 but you must own the game for this, all problems you face like crashes or problems with the emulator just ask in the discord.
My friend ‪@cas36‬ helped me with a little bit of this stuff so he did something!!!!
If you wanna find people to play with easier join this Discord made by someone in the RPCS3 Server:   / discord  
RPCS3 made this possible please give them support!!!
RPCS3 Website: https://rpcs3.net/
RPCS3 Github: https://github.com/RPCS3/rpcs3
RPCS3 GTA 5 Wiki: https://wiki.rpcs3.net/index.php?titl...
RPCS3 Discord:   / discord  

Game Update Guide: https://wiki.rpcs3.net/index.php?titl...

Version: RPCS3 0.0.27-14845
Specs:
Intel i7-7700
GTX 1070
16GB RAM
Windows 10 Home

I will not give you the game.