Extract the files into the game's root directory and run the game through the Augmentrex.exe to bypass the performance issues. :
: Use a tool like 7-Zip to extract the .zip archive. It typically contains the game files pre-installed or an installer executable. File: HELLGATE.London.v20181213.zip ...
: If you prefer the original multiplayer experience, you cannot use this 2018 Steam/Global version. You must obtain an original 2007 DVD image and follow the London 2038 Installation Guide to connect to their private servers. Extract the files into the game's root directory
: If the game fails to launch, ensure you have the DirectX End-User Runtimes (June 2010) and .NET Framework 4.7.2+ installed. : If you prefer the original multiplayer experience,
: If the game doesn't support your native resolution, you can manually edit the settings.xml file usually found in Documents/My Games/Hellgate/ . A working fix for the 1 FPS Bug - Steam Community