You gotta be kidding me. Im running the following specs and performance is all over the place, solid 60fps some areas locked to dips in the 20's! All drivers cleanly installed everything up to date...

GTX 690 QUAD SLI
2560x1440p

16gb corsair vengeance 1600mhz

256gb SSD mushkin chronos

3TB seagate barracuda

Core i7 2700k 4.8ghz

gigabyte z68 ud7 b3

><; should be able to manhandle this game

You gotta be kidding me. Im running the following specs and performance is all over the place, solid 60fps some areas locked to dips in the 20's! All drivers cleanly installed everything up to date...

GTX 690 QUAD SLI
2560x1440p

16gb corsair vengeance 1600mhz

256gb SSD mushkin chronos

3TB seagate barracuda

Core i7 2700k 4.8ghz

gigabyte z68 ud7 b3

><; should be able to manhandle this game
Same issue here in my 690 quad sli. This game is pure crap. Even metro runs way better than this one. Best of all performance varies each time you restart the game. Sometimes there's tons of stutter even when staring at the floor and ceiling, which are areas which would give high fps otherwise.

thats absurd.... 2 grand worth of gpus and its pathetic performance. gtx 690 is rated as faster than gtx titan so its not our cards

Im in the same boat. Random sporatic FPS drops in certain area's or simply looking in a random area will cause huge dips in FPS.

Im using 3 way SLI with GTX 480's. When the FPS is not going up the wall I get very good FPS. Its either a driver issue or something on their end optimization wise.

i remember crysis being optimized terribly, then poof patch fixed it

Try this for your SLI compatibility bits: 0x0C0320F5

Ive tried it and i no longer have dips during cutsceens. I only have a single 690 though, not quad.
Also try this auto exec.cfg to see if this helps: https://www.dropbox.com/s/eexmguby2sw9noe/autoexec.cfg

I won't promise it will work for you quad sli guys but worth a try.