Maybe worth drawing a parallel with piston aircraft engine's which are run in flat out from new or re-manufacture. The reason given is to maintain high combustion pressures to force the rings out onto the bores and hence speed bedding in of same. Any nannying of this procedure extends the running in process which requires the peaks of bore surface to be knocked off. This also leads to combustion products creeping past the rings and filling the troughs of the bore (needed to retain oil film) causing glazing hence high oil consumption and poor performance.
Typically this takes less than 10 hours of relatively short flights whilst keeping a close eye on oil temp. Oil consumption is closely monitored during this period and the running in is deemed complete and successful when oil consumption stabilises.
I admit that lower rpm's are involved though.
