With your help, we have tried several iterations of optimized Clients. This revealed issues with operating systems, plugins, networking, and ultimately a path forward. The solution is a wholesale change in Big Business 12, which is 100% 64-bit. Hopefully this is not too disruptive, other than being so fast you can't wait.
This Solution provides details (6778).
We tried optimized Clients with Big Business 11 and they worked really well but never 100%. This resulted in patchwork installs, since some of your users might need a tool or feature or compatibility that works better in non-optimized Client.
Big Business 12 switches to Optimized Clients.