I've switched to QMC2 from EasyMAME as a GUI front-end to MAME, and am mostly happy with its capabilities. However, I can't seem to figure out how to activate the 2X automatic scaling. I can drag the corner of the game screen and resize it manually each time I start it, but it would be nice to have it scaled up 2X automatically. (The default size is way too small.)

Is this possible? Thanks.