Really loving it so far! Would be a 5 if certain things were improved on such as the AI and physics, which are frankly very disappointing at times. Also the police system is an absolute joke and needs sorting ASAP. I've heard lots of talk of glitches and I don't know if I've just been very lucky so far but I'm playing it on the Xbox one and have experienced very few glitches after 30 and a bit hours.
It's a shame to see so many people just jumping on the hate band wagon on this game, but I'm not going to let them ruin my fun. With a bit of ironing out in certain places, this game will be something truly special.