Thanks a lot Terry,
Currently we cannot decrease some of :sqt_max_cache_size, dsi_sqt_cache_size because there is one DB which is heavy in transactions , so the SD and sqt caches are having a lot of contention and latency.
I've attached a sample image form SCC.
RS is running on a Linux Virtual machine so I guess we should increase RAM available in order to bump up max_memory and sqts caches.
Regards
Jose