1. Open up OpenIV in edit mode
2. Find the vehicle.ytd file (ex. ageraone.ytd)
3. Then Double-click it and export all textures as .png
4. Go to where you extracted the .ytd files
5. Sort by size then select all the high file sizes (Do not select purple images..)
6. Open up Photoshop or getpaint.net then drag and drop the selected files
7. Click image then Image Size
8. Change the pixel dropdown to Percent
9. Then change the value to 50
10. Export as png and overwrite the original file.
11. Go to where you edited the files..
12. Then select all and drag and drop it to the original.ytd file
13. Then hit ok
Note : Make sure you are on edit mode edit > edit mode
Well yeah. But a decrease in main textures like doors etc. for police cars or else is also a no-go. So resizing some textures would probably be fine but the bigger textures should stay high quality, shouldn’t they?
I do this to every car that comes into my city and its brings down the streaming a lot and improves the performance of the server. I personally use paint.net for this so i can keep the imaged as .dds files