All motor mounts aren't created equal either, but it might be easiest to test if raising the idle speed solves the problem. Tickle the gas in D or R to raise the idle to 850 or 900 rpm and if that works, find the idle rest stop on the throttle body and see if it can be easily adjusted. I think on your car it should still be.
An extra 100 rpm won't hurt anything IMO.
An extra 100 rpm won't hurt anything IMO.