> I alreaady have compres=zstd (should be better than lzma).
I'd be surprised if `zstd` compresses better than `lzma` (which itself
should compress about the same as `xz`). I just tested here and I get
zstd => 11049378
xz => 9989884
lzma => 9965122
Maybe with more control over the compression parameters `zstd` can be
more competitive, I don't know.
In any case, my quick tests do suggest that indeed changing to `lzma`
probably won't help you very much (not nearly as much as changing to
MODULES=dep).
Stefan
