After upgrade from 4.0SP7 to 4.1SP5, WEBI Rich Client is running very slow, example add another empty column to vertical table it will take around 1 minute to be complete. Before this, all is running smooth.
Weird thing is when we edit WEBI in BI Launch Pad or CMC, it running quicker and smoother after upgrade to 4.1 SP5. Before upgrade, running on WEBI Rich Client is quicker then WebApp, but now it is different story. No patches have been applied to.