I play 60 on the PC for the most part and 30 on PS4, going between the two immediately after is noticeable, 60 is just so much better, however for me as long as it's a solid 30fps then it's fine, isn't an issue at all and it's only really aggravating after coming straight off playing on the PC at 60.
And just thinking about some of the best games I've played this gen such as GOW, BB, MHWorld PS4, HZD, all action games which I consider the best this gen along with DMC & Sekrio when it comes to combat, they all ran at 30 and wasn't any problem at all, except for BB at times since that had framepacing issues. One other thing as well is games like GOW, Horizon and Spider-Man on the PS4 all feel like they run so much better and smoother than locking a game to 30 on PC, that's one thing I hate whenever I try to lock 30 on PC, never feels as good as the consoles lock and can never get perfect framepacing for some reason.
But yeah, overall it's not really a big deal, like I said, majority of the best games I've played have been a solid 30fps and the lower fps was never a thought when playing those games.