Just use the default nds emulator from the experimental section and tone the resoulution down to as close to native as you can, native resolution for ds is 256x192. Got advance wars ds working smooth with minimal grafical errors when started with default settings it wouldn't run without lagging.

@moltke44 Drastic has not been updated since. The problem is what @windale said, the microphone emulation hasn't been implemented.

I agree with @vikingrock .

Drastic is an amazing emulator and work 100% for all games I tested.

Only barrier for some games is the actual touch pad but many don't require one.