Solid blocks are not implemented in xz files. Not even the number of treads. (PeaZip 9.0)
- That's how it should be:
"C:\Program Files\PeaZip\res\bin\7z\7z.exe" a -txz -mmemuse=p60 -mx7 -md=32m -mfb=64 -sccUTF-8 -bb0 -bse0 -bsp2 -ms=8m -mmt=2 -w "C:\TEMP\11.tar.xz" "C:\TEMP\11.tar"
And here is the screenshot in the file attachment.
Thank you very much for reporting the problem, it will be fixed in next release.
Issue fixed in 9.1.0 release, now threads and solid block size switches are correctly applied to XZ format.