We seem to experience similar issues when opening and switching between Stored Displays.
Current Versions (Citrix Applications)
ArcGIS Desktop 10.2.1 Utilities and Telecom Update Patch 6
ArcFM Desktop 10.2.1c
Something simple to try that made a significant difference at one site I work at is the PC power plan. These days IT departments like to default PCs to a Balanced Power plan however I've seen switching to a High Performance power plan double the speed of some editing operations in ArcMap. Probably more difficult in a Citrix environment Kym as you will need this setting changed on the Citrix farm.