@slikfiya I did a LOT of vehicle replacements during a time when I didn't know what I was doing. I went through all archives that hold vehicles, and examined each one. You can quickly find what are the replacements just by looking at the size of the files. What I started noticing was that way too many x.yfts were the same size as x_hi.yfts - meaning no LODs! I replaced them all with vanillas, and then searched for vehicles that had LOD replacements - some I kept that did not have LODs, but I reduced the damage by increasing identical vehicle spawn distances in vehicles.meta by changing their default spawn distances from 20 to 40.