Thanks to Mausschieber for compressor and installer and to KaktoR for the compression method.
With this method not only compression size is smaller, but install time is shorter too!
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19:07:21 - Selected ARC/DS method for Data-01.bin was: xtool:munity,lz4hc,l12:lz4_192+xtool:dd3+lolz:dtb1 :d119:mtt1:mt16:mc1023
23:40:28 - Overall input size: 34.85 GB
23:40:28 - Overall output size: 21.00 GB (Ratio 60.25%)
23:40:28 - Overall conversion time: 04:33:06
23:40:28 - Overall conversion discs: 5 DVD5
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Install Time: 00:07:51 (HDD on HDD)