ELKS 0.0.81 slower than the 0.0.76

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    I've installed EKLS on an old 386 with 2Mbytes RAM. I've tried
several versions and I've remarked that the older versions are faster
than the newer. The starting is the same but the shell is slower.
    The change is appeared between the 0.0.76 version and the next one.

    Why ?