Way more grip in F1 2017. 1st gear isn't AS obnoxious as before. Always spinning the rear wheels no matter what. If I had manual control over gears, I wouldn't shift into 1st at all, that's how bad it is.
AI seem faster compared to previous version, faster lap times. I think they make more mistakes now too.
In the rain, it's automatic loose for me while AI drive with perfect traction.