We transfer master data from ECC6.0 to GTS 7.0 using ALE and the plugin. We schedule regular jobs to process change pointers
/SAPSLL/CREMAS_SLL
/SAPSLL/DEBMAS_SLL
/SAPSLL/MATMAS_SLL
to transfer every few minutes. We've been doing this for nearly six years. We have noted recently that the processing time is getting longer, particularly for materials.. We are regularly clearing out the processed change pointers with job RBDCPCLR.
OSS Note 305462 describes the use of reduced message type functionality, to address performance issues. We did open an OSS message, to confirm whether this was applicable to GTS. However we did not get a firm answer, so we'd be interested to hear if anyone has implemented this functionality for GTS.