The PC (meaning mouse+keyboard) controls are awful and for many completely unusable.
There is no click-to-move, no click-to-interact, no click-to-attack. No click to anything really. It's as if they forgot that mice click on things. If you want DAO or even DA2 type m+kb controls, you're out of luck here.
It took until patch 3 just to get a walk toggle. The only way this game is even moderately playable on a PC is with a controller, but then, you might as well play the console version as all the menus are designed for watching on a TV screen 8 feet away anyway. Note however, that with a controller connected (assuming you can get it to work - there are reports of people needing to disconnect all other USB peripherals first) the m+kb won't work at all. You can use one or the other but not both. Appearently, programming advances from the previous 20 years were lost at BioWare.