I already did all of that before to increase my FPS, but I found out the dlcpack that was still adding the vegetation in my gta 5, it appears to be a folder called "lwe". But I don't remember seing in the oiv config any path to this file, so what I did to get rid of the vegetations was renaming my dlcpacks to "dlcpack" in the mods folder, then I saw that after renaming it everything was gone, so I could take some addons files out until I see which one was holding the vegetations. So I could figure it out by myself, thanks a lot for your help !