This particular repack is a of Rockstar’s masterpiece. The original game, after updates, occupies roughly 95-110 GB on a hard drive. The R.G. Mechanics repack compresses this down to an astonishing 36 GB to 45 GB for download, depending on which version you find (v1.0.350.2 or the newer v1.0.1868.x).
Short concluding perspective
Once installed, it runs like the original, but decompression requires significant system resources. User Experience and Community Advice