A quick search shows they perform ok (I'd guess 30fps-ish, but maybe check a Youtube review) but they're not exactly looking all that great.
FWIW, I enjoyed them on PC. They are ridiculous, particularly 4. I liked 4's ridiculousness, but most don't. The Matrix inspired DLC was cool too.
And tbh the last GTA games I finished were the PS2 trilogy, even though I own 4 and 5 I bounced off them eventually and got bored, whereas I finished SR3 & 4 and like I said, really enjoyed them. This is a total ymmv thing, again most people think the original SR games' ridiculousness is off-putting, but I found that lended themselves to fun games.