Thats already on the index but i got it 2gb lower with lolz and bpk.
Tools used: Ztool (pzlib) latest version included with uarc 2900 R5, srep v3.9.2, binkpack & lolz
Method Mask: bpk on .bik, .bk2 files / pzlib+srep+lolz on .tiger files / srep+lolz on all other files
Code:
Original Size: 22.1GB
Compressed Size: 13.1GB
Packing Time: Around 8 Hours (30040.87 sec)
Install Time: Only 9-10 minutes
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4 Cores on 3.9GHz+8GB Ram+SSD