Well, I'm confident that the launch will be just like BF3 and Bad Company 2, with craploads of bugs and forums full of whining.
Anyone using an nvidia card having trouble with frame drops in your nvidia 3d settings set BF4's power management to maximum performance. Everytime I booted up BF4 my 560 ti would underclock to 405/910/4** and it was obviously killing performance.
I'm not sure about frame drops, and I don't change my clock speeds, but my 560ti runs it ok for the most part, not maxed out of course. Even on the older beta drivers, it runs ok but has crashed once out of the 3 games I've played. In fact I find it kind of bland looking, especially after the tower comes down, everything must be covered in a white dust.