Instead of risking your PC on a 500MB file, look for or "DODI Repacks." These are the gold standard for compression. They won't give you the game at 500MB, but they can save you 50% of the download time compared to the standard Rockstar or Steam versions. Minimum System Requirements
If you have low RAM, manually increasing your Paging File size in Windows settings can help prevent crashes during intense gameplay. What to Look For Instead