You can use this plugin to precompress this game. It works for game version Hotfix #4 (17 August 2023).
To update the xtl file when a new update comes out, you have to use
bms2xtool with
lspk_mod_R3.bms script with the following config.
Code:
[Config]
SafeMode=1
UserInput=
Exclude=copy
gzip=zlib
deflate=zlib
zlib_noerror=zlib
deflate_noerror=zlib
XMemDecompress=xmemcompress
lz4=lz4hc:l9