My guess is that it's working as intended. Imo it's perfectly ok to use those parts of the track. The reason there are bumps on some parts probably is just to make the track a little more intresting as you have to make a decision if you want to take a risk or play it safe.
Example:
What do you guys think? Anyone know what rules are used in rl racing?
Example:
What do you guys think? Anyone know what rules are used in rl racing?