OlliOlli World [Build 7770373]
Step 1: Decompress all .bundle files using UBT. Compress the decompressed files to tmp files and make HDiffZ patches with all tmp files to original bundles. Discard tmp files and original bundles leaving HDiffZ patches and decompressed bundles.
You should end up with about 60mb of HDiffZ patches - not bad for 1100 bundles
Step 2: Compress with srep+lolz
2.9GB ====> 4.4GB (after UBT) ====> 720MB