Block Definitions Tab slows down Rhino

Hello everyone,

I´ve noted for some time now, that having the Block Definitions Tab open + having “large” amount of blockdefinitions in the document will make the Rhino experience quite slow and lagging.
Workaround for me at the moment is to close the tab while not needed.

It´s not a big issue for me personally, because I´m not constantly working with the Block Defintions Tab, but it would be nice to be able to leave the Block Definitions Tab open at some point.
Maybe there´s a way to increase the efficency/performance of this feature.

Kind regards,
Dominik