Recheck some parts of MSLCM_LC2013

[behrisch]

I found some unclear passages, which should be rechecked or discussed.

This ticket serves as a reference.

[behrisch]

@leoluecken changed summary from "Recheck some parts of MSLSM_LC2013" to "Recheck some parts of MSLCM_LC2013"

[behrisch]

@namdre committed 23918f1 (aka r23077):
preventing unnecessary slowdown requests refs #2578