[Verjigorm]

I think what you're asking is about setting a "Task Priority" on execution. You will need to use the "start" command to execute dom2.

Start has a sophisticated set of options so I suggest you view it's help documentation by typing "start /?" at a command prompt. Here is an example of its use:

START "Dom2" /LOW /Dc:\Progra~1\dominions2 dom2.exe -w

Note that I have had to use tilde (~) notation to abbreviate the program directory--START does not like spaces. "Dom2" is the window name. LOW is, of course, the task priority.

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Update:

You don't have to actually type this command in every time, just determine the command you want to run (or use the example) and Paste it into the "Target" entry in your dominions 2 shortcut.