Grand Theft Auto Online issues

[Taalojarvi]

So i managed to snag a copy of Grand Theft Auto V during the Epic Games Sale and it has been an absolute nightmare to try and get online working on BSNL FTTH.
I'm using a VSOL HG323RGW ONT (Branded as Scopus) and running Firmware version 1.0.31-2004. I've configured Port forwarding as well as Set NAT Type to NAT 1.uPnP is also enabled and the ONT is showing up as Realtek IGD under network.
Any help into the matter will be highly appreciated.

 

[GR2]

@varkey I think dmz is not a good idea.

 

[Taalojarvi]

Hey guys a little update. I figured out what was the causing the issue. It seems like GTA V opted to use my virtual machine's Host-only adapter when hosting the heists which led to my teammates being disconnected from the game. I disabled it the adapter in device manager, and GTA V seems to be working fine as of now. Thanks for all the support!

Mods please mark thread as solved