Solution

Changing admincache.rowlimit in Waveset.properties only takes affect after you restart the server. Increasing the cache size to accommodate all of the administrators in the repository may increase server performance if there is enough memory to hold the cache without resulting in excessive JVM garbage collection.

Be aware that this solution does not scale.

Available JVM heap memory is a limitation to consider when using the admincache.rowlimit property to configure cache size, particularly when implementing and tuning an x64 system.