Best Compression Methods for 'Specific' Games. Q&A

[Simorq]

JC4-ENG (Without Hi-Res Textures and Video Pack) 38.28 >> 75.4 GB >> 27.3 >> 14.2 GB
Creating archive: RG-1.Bin Using oo2reck+oo2recs+srep:m3f:l1024+lolz:d64m:mtt1:mt12 :mc2
Compression time: cpu 2163.33 sec/real 13621.71 sec = 16%. Speed 2.96 mB/s
All OK - 3 H 40 M

if use
lolz:dtb1:d192m:mtt1:mt4:mc128 - 13 GB
-----------------------------------------------------------------

Testing archive: F:\FreeArc\RG-1.Bin
Testing time: cpu 140.45 sec/real 1138.86 sec = 12%. Speed 35.43 mB/s
All OK - 19 M
-----------------------------------------------------------------

Hi-Res Textures

archives_win64\main\hires\*
archives_win64\main_patch\hires\*

Creating archive: RG-2.Bin using oo2recm+oo2reck+srep:m3f:l1024+lolz:d192m:mtt1:mt4:mc1023
Compressed 10 files, 4,389,062,552 => 2,876,218,077 bytes. Ratio 65.53%    
Compression time: cpu 61.81 sec/real 5148.70 sec = 1%. Speed 0.85 mB/s
All OK

Testing archive: RG-2.Bin
Tested 10 files, 2,876,218,077 => 4,389,062,552 bytes. Ratio 65.53%        
Testing time: cpu 16.52 sec/real 160.41 sec = 10%. Speed 27.36 mB/s
All OK

Video Pack
archives_win64\main_patch\game6.arc
archives_win64\main_patch\game6.tab
archives_win64\main_patch\game7.arc
archives_win64\main_patch\game7.tab
archives_win64\main_patch\game8.arc
archives_win64\main_patch\game8.tab
archives_win64\main_patch\game9.arc
archives_win64\main_patch\game9.tab
archives_win64\main_patch\game10.arc
archives_win64\main_patch\game10.tab

useless videos:
archives_win64\main\game37.arc
archives_win64\main\game37.tab
archives_win64\main\game38.arc
archives_win64\main\game38.tab
archives_win64\main\game39.arc
archives_win64\main\game39.tab
archives_win64\main\game40.arc
archives_win64\main\game40.tab
archives_win64\main\game41.arc
archives_win64\main\game41.tab

game37.arc and game38.arc aren't useless completely.

game37.arc = the first bink video stream is a credits video file and the rest are skills tree videos used inside the game.

game38.arc = the first bink video stream is used by the game while the rest are unused.

thanks to ShivShubh