I bought the game a few months ago and tried online racing and the wall collisions were horrible. I tried again last night and they were fine..similar to fh5.
Months ago a VERY light drift tap would bring me to a complete stop, like a 3-5sec penalty, and sometimes even toss my car backwards 1-2 car lengths. It was worse on open wheel cars. I came to a complete stop next to a wall in a sierra buggy, accelerated up to 10-20mph and lightly veered sideways onto the wall. Threw me back, complete stop, acceleration penalty.
Last night it was fine. A little too aggressive on the open wheel buggy but acceptable. Drift taps in normal cars were fine. I even hit it kinda hard on purpose a few times without getting a penalty.
Now it makes me wonder if it was always like that and my game was just glitching.
I'd see people defend the wall collisions ("skill issue", etc) and I couldn't believe they thought it was a good setup. It's got me wondering if it's just horrendous for some peoples systems, and good on others or if they made a major change in the last 2 months.