Hi LamaRose. EXP2 still has the sustains. You can force them at will as in EXP1. If you go to the layout page where you can assign articulations to the UI slots you can select sustains for any of the UI slots and force them on when required. Also you can force them without placing them on UI by pressing D0.Request copies of the first two versions... each version has some nice sustains with multi-dynamics. V2 - Exp 1 - is still my favorite for this very reason.
As SoNowWhat said. Please make sure that the library is on SSD (recommended specs) and then please make sure you set the streaming properly in UVI (manual on the product page has detailed instructions)Everything is up to date. The loading time is very long and it takes many minutes for the message to disappear, either in Falcon or UVI workstation latest versions.
If you still have issues please get in touch via our support, so we can assist you further. Loading time on SSD is between 9 to 35 seconds depending on exact spec and preset being loaded. Hope that helps