I think none of your transitions works well
The first jump has to go... "going left" doesn't help, I still have too much speed and it's a major flow-breaker. Second jump... it's lucky. Sometimes the car twists to a position that makes it hit the platform. And yes, I did have roughly the same amount of speed every time I drove it. And yes, I did get past it many times, too. But it's just too random for me.
The diagonal drop from the platform to GP doesn't work because of Canyon's physics. The car twists in the air which makes it uncomfortable to drive (for me) and it's really easy to mess up, too. You could make the drop a bit smaller for instance, right now it's pretty massive (which doesn't help).
The final turn might be a bit too tight, which also affects the last drop (which is also a bit blind). So I hope you could fix at least some of these things...
EDIT: Alright, last drop and curve can stay. Third drop is a minor problem, can stay as well. But the GP-> platform jump at the beginning is really annoying. Still don't know about 2nd jump, fixing the first jump might fix it too.