i was able to replicate this several times... other times it just did not react as expected. browsing the web was fine performance, but within the CPE, the performance was abismal when it cames to adding filters, sorting columns etc...
Go to custom property editor
Go to interfaces
Add a filter on Fullname for say “pmyk”
Add column to view for “interface name”
Custom property editor goes plank, but shows I have 33 pages of interfaces