Target specific GPU on launch

How do you make TouchDesigner target a specific GPU on a dual GPU PC?
Is it necessary to launch your .toe via command line or a batch file, or is there some configuration that can be loaded?

see documentation about GPU Affinity here: Using Multiple Graphic Cards - Derivative

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Thanks yes saw that. Now just need to figure out how to also pass environment vars in the same .bat file.

that’s easy enough:


Thanks. Another gotcha I discovered was the requirement to ‘Run as Administrator’