I have a 60GB Launch PS3...
I get poor framerate all the time - but it's MUCH MUCH worse during multiplayer online (even as bad as one frame a second during GTA Races Online when there's alot of action on screen

) - Makes the game unplayable when that happens (it happens alot!).
I also notice loads of popup and tons of lag with the textures (even on single player) - sometimes things like the road/wall textures don't load until I've driven past them when driving quickly.
The game completely crashes/freezes alot during multiplayer too (inbetween games rather than during play).
R* need to sort this out - It's really getting to me now. Also - the graphics are pretty crap, so why the terrible framerate??? Can surely only be shoddy programming?? The game is only 640p on the PS3 yet they have the guts to claim that it's 1080p on the back(!??) - I have been a massive GTA fan from the very beginning and really wanted to love this game - however, this game needs sorting out.
There are countless other people online (both on the X360 and PS3) saying exactly the same thing - they are getting terrible framerates. R* better start listening or this will be the last GTA game I end up buying. There's no point bringing out a patch after everyone's completed the game already. For a software company making billions out of GTA, you would expect better to be honest... I don't pay £40 to be a Beta tester. It's not like we all have different spec machines with different graphics cards / motherboards - they would have known about all of these issues before the game was launched.