I've noticed that DX7 V (and other Arturia demos) take a long time to load. I regularly experience loading times of 3-5 seconds when using DX7 V; contrast this with Dexed, a free DX7 VST, which loads instantly.
I'm running Windows 7 on a 3.50 GHz, 8-core processor with 16 GB of RAM. This leaves me puzzled as to why this plugin is taking so long to load for me.