The required files are in Gimp-2.10.34 (but not in Gimp-2.10.32 or earlier).
@TwoHeavensAsOne.
Update Gimp to the latest version 2.10.34 or if you have Gimp-2.10.32 use G’MIC-3.2.1.
G"MIC-3.2.3_pre#230304 works very well and maybe it’s an illusion (I didn’t take exact measurements), but it seems to be faster than previous versions.