The method getPropertyList of class BaseIndividualTemplateModel is too slow if it works with an external rdf database. Http client have to open end close too many connections in series.
we are using GroupedPropertyList parallel version to
match blazegraph performance requirements (Parallel client processing): https://wiki.blazegraph.com/wiki/index.php/PerformanceOptimization
the performance inprovment is about 50% of processing time.
could be useful to merge in the community version