Advanced Launch Options - Set Affinity?

Hi, 

I was wondering if it was possible to use the EA app's advanced launch options to set the affinity for a game.
I'm replaying Dragon Age: Origins Ultimate Edition, since the Veilguard just came out, and I'm having issues with the game freezing and crashing out.

After a little digging, I determined that this is because I'm running on a multi-core system, and DA:O hates it.

I manually changed the game's affinity in task manager, and it's running a lot more smoothly now but I have to do this every time I launch the game as the affinity is reset.

I tried using a shortcut to change the affinity with a command line prompt, but because the launch is managed by the EA app, the shortcut doesn't work.

I know that I can change the affinity of the EA app and this should change the affinity of Origins, but I'd like to be able to run my other games using multiple cores and not have to keep changing back and forth. Is there a way to use the Advanced Launch Options to set the affinity for the game, like I can use them to force the game to run in dx9?

Thanks