I had a mission getting started up this morning!
First problem was the game required > 70gb to unpack and wanted it on my OS SSD that only had 70gb free, so ended up having to copy the install over to the mechanical drive, unpack it there, which resulted in 51gb of files, so I could then copy it back. I'm still not 100% sure its running off the SSD! I have been running the jc3 executable from the SSD drives steam folder, which does start the game.
Ran the game, had the horrible missing textures and holes in the ground problem that people here have mentioned on AMD cards. I downloaded the beta drivers 3 times! 3rd time I downloaded the full package, which finally fixed that problem.
I had to change the games resolution to 1080p in the menus's and then wacked everything on full. Single 290 with a slight overclock, I'm getting 80-90fps in most places, so have capped it at 60fps with rivatuner.
No problems since, game runs like a dream! I don't really see it dipping below 60fps.
I am REALLY bad at the whole wing suite flying though, face planting into everything. The car driving model is terrible! The grappling needs some work too, i.e if you grapple onto a surface, like one of them guard towers and get underneath the platform, then spend 30 seconds trying to get up and on to said platform. Grrrrrrrrrrrr.
I have an xbone controller here, I might try that to see if its any easier to play.
Ive only liberated a few places so far so it's early days, but it seems fun enough so far.