[Darryl Ramm]

3. Yes when you use a UAD plugin in Pro Tools the processing for that Plugin runs on the UAD DSP. The actual plugin processing always runs on the DSP, never native, what looks like a native plugin just always launches processing on the DSP. It is not like TDM or HDX where you can run as native, it is DSP only. (Something I wish was not the case)

So...

You always need a UAD interface or other form of UAD DSP attached to the system to use those plugins.

If you run UAD plugins in Pro Tools and in the console they are sharing the same DSP resources and you need enough DSP to do both. You can end up needing lots of $$$ DSP power... to get stuff that could run native on a modern CPU... and they are nice but higher priced plugins so you make your choice and pays your money or not.

Running UAD plugins in Pro Tools require large buffer sizes for reliability, if you want to track through them at low latency... you would usually use them in the console not in Pro Tools.

There is lots to understand about plugin DSP plugin use, latency of some UAD plugins etc. Luckily UAD is amongst the best vendors with documentation.