you definitely need to tweak the course. And before everyone says "you are just bad at shreadsauce" I agree that all the features are hitable, but it could be much smoother. Also filming a complete line in a single take perfectly (if thats what the contest is) is going to be really difficult if the course is really inconstant., Here are my complaints/recommendations:
First set of features:
-Trying to disaster on the middle rail can be really inconsistent. A tiny variation in your pop timing can be the difference between getting the disaster and not popping at all (if you pop slightly too early or slightly too late)
-If you want to hit the full flat down, you need to go kind of slow to make it smooth, otherwise its awkward. However if you do go slow, you knuckle.
-On the down rail, unless you boost almost to the end, you knuckle slightly almost every time.
-on the DFD, in order to hit the whole thing you need to go pretty slow, and again if you do this you knuckle
Second set of features:
-The Closeouts are pretty much prime.
-The cannon shoots you out too far, maybe move it farther back? You can do it if you go really slow, but it just doesn't feel natural.
-If you want to only hit the down box its really awkward because it dips down suddenly. Not smooth at all.
-I haven't hit the box all the way to the right yet so I can't comment
Cannons:
-The only problem is the middle cannon, it should be raised just a little more.
Jumps:
-All of the jumps are pretty much fine but I still have a few suggestions
-All of the jumps should be lowered into the ground so there is no white before the paint lines start. Otherwise the transition can be sketchy
-There is something about the way the first jump is angled where it makes certain spins awkward, maybe decrease the angle a little bit?
That is all I have for now.