Sorry for posting this here (because this was a subject in the lasts posts).
So after a few tests, I think the error from before with DiskSpan_GUI is totally random. The error Danziel123 gets is at 1.1%, my error was at 2.3% (precompressing stage).
So I did 3 tests in the last 5 hours (only xtool2020), the first one with /DEBUG option, the second one with /HIDEUSAGE, and a third one without any parameters (so just standard). All 3 tests were successfull, so I came to a conclusion that the error happens either totally random, has something to do with the chain (for the last I don't have that time to make dozens of tests, I would test for weeks on this) or simply using xtool2020 for all the files totally in the wrong way (because we're all a little bit too lazy to check every single file, right?

). Final note: It just works
Code:
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----------------------------------------------- CONVERSION DATE 19.12.2020 -----------------------------------------------
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23:41:15 - Deleting files from the output folder.
23:41:16 - Files have been deleted.
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23:41:16 - You have chosen the unlimited type for the output size.
23:41:16 - ISO images will not be created when conversion is complete.
23:41:16 - The computer will remain on when the conversion is complete.
23:41:16 - Selected ARC method for Data1.bin was: cp_2077
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23:41:17 - Compression initialized in 19.12.2020 at 23:41:17.
23:41:17 - Starting Data1.bin archive creation.
01:04:43 - Moving Data1.bin.001 file to media folder.
01:04:45 - Compression finished in 20.12.2020 at 01:04:45.
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01:04:46 - Getting size of the game: Cyberpunk 2077
01:04:46 - >> Installation folder size: 59.64 GB
01:04:46 - >> Compressed game size: 125.20 GB
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01:04:46 - Overall input size: 59.64 GB
01:04:46 - Overall output size: 125.20 GB
01:04:46 - Overall conversion time: 01:23:28
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Edit:
Code:
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----------------------------------------------- CONVERSION DATE 20.12.2020 -----------------------------------------------
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01:17:17 - Deleting files from the output folder.
01:17:17 - Files have been deleted.
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01:17:17 - You have chosen the unlimited type for the output size.
01:17:17 - ISO images will not be created when conversion is complete.
01:17:17 - The computer will shut down when the conversion is complete.
01:17:17 - Selected ARC method for Data1.bin was: cp_2077+srep_new+4x4:b64mb:lzma:ultra:64m:bt4:fb273:lc8:mc1000000
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01:17:18 - Compression initialized in 20.12.2020 at 01:17:18.
01:17:18 - Starting Data1.bin archive creation.
05:24:03 - Moving Data1.bin.001 file to media folder.
05:24:08 - Compression finished in 20.12.2020 at 05:24:08.
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05:24:09 - Getting size of the game: Cyberpunk 2077
05:24:09 - >> Installation folder size: 59.64 GB
05:24:09 - >> Compressed game size: 40.08 GB
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05:24:09 - Overall input size: 59.64 GB
05:24:09 - Overall output size: 40.08 GB
05:24:09 - Overall conversion time: 04:06:49
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