Yep. This will give the same results as sub 30fps. When the frames hit between 30 and 60, it will cause stuttering thanks a TV's refresh rate. Hopefully, it won't be that bad in Tomb Raider. Hell, COD Ghosts on PS4 was going higher than 60fps and was a stuttering mess.
It depends on what "most of the time" means. If it's like BF4's campaign and smaller player matches, it'll be excellent. If it's like 24 player matches on KZSF I would rather it capped.