XOCN Slow in UI

Our colorist is experiencing lag in Cortex 3.x and 4.x but only when working with 4K XOCN. Any adjustment he does to the 4K, including selection, applying changes, and renaming, has a 5-10 sec lag. This is not the case with “Regular” Sony RAW. The media is on an SSD SAN volume where the regular RAW is also read from.

Any ideas would be helpful!

Sorry for the delay. Could you send us a file so we could try it here?