This little mod reduces the number of VIG ships drastically with the aim of improving the fps, especialy for weaker PCs. This is done by tinkering around with the jobs.xml. Im uploading this in case someone has a similar problem, so its easier to solve. As it reduces the number of ships from a DLC faction it has a dependency for the Tides of Avarice DLC.
Im a total noob with modding, so i couldnt have done this without the help of Unitrader and eMYNOCK. Thank you very much, you two