Some more tips
You don’t need speed boosts. In fact, perhaps better if you don’t use any. Try to always be in pole-position. That is the best way to stop people from blocking your view, and you are in a hurry anyway. Time is of the essence. Cut every corner you can!
The first section is a warm up, and it doesn’t matter who gets to the cog-platform first, because everyone needs to wait. There also is an iron floating pedestal there to the left, but I would advise against jumping on it. Because you’ll most likely be unable to make the jump, and you’ll bump your head and fall.
As soon as the debris starts flying into position, jump towards the little cog that appears on the right. Don’t wait for the debris to settle first, because every time advantage is vital here. Technically it is possible to also jump straight to the stone platform behind it, but unless you are well practiced you are likely to fall in between the platforms.
Hop across the debris towards what looks like almost a stone staircase shaped wall. Don’t climb to the top, that costs you vital time. Instead, make an angled jump towards the next platform, by jumping around the wall. From the next platform, jump straight onto the big cog.
The next series of jumps will simply require timing. There is one bit where you have to jump to a small square block, and from there to the stone staircase, which is tricky. This is where you’ll see if you are good on time. If the square is already covered by the green mist/goo, then you need to be faster (jump earlier when the flying debris appears).
The slanted cog always causes people to fall, because they land on the side of it, and then slide down to their deaths. Instead, use multiple small hops on top of it, to avoid sliding off. And make sure that when you jump to it, you land exactly on the top side of it. Also run far enough across the cog, or you won’t make the jump to the other side.
Eventually you’ll pass a floating island with a fake chest (all of the chests you encounter along the way are distractions). Soon afterwards there is a thin beam with a small floating block next to it. Jumping to the small block will cost you vital time! Instead, jump straight onto the beam, but be careful not to overshoot it. From the thin beam, carefully jump onto the blocks attached to the stairs. Don’t rush this bit, this requires delicate jumping.
Make your way up, until you get to the dead end. It may seem like you have a moment of rest here, but you don’t! Down below you’ll see the platform with the fake chest from earlier. Jump down as fast as possible (if you drop down, you’ll probably miss it), and a platform appears. Continue your way up quickly before the green mist/goo catches up to you.
Eventually you’ll face two paths, I always pick the right one. But that means having to stop and rotate your camera 180 degrees to leap to the final stairs. The left as far as I know, is also a viable path.
Once you reach the end of the stairs, wait for the clock-face to explode. The tower will probably make an extra turn or two, and it isn’t until the green mist/goo almost reaches the clock-face, that it opens up. You will have to leap into it immediately. This doesn’t require careful jumping. Just roughly hitting the gap is enough to teleport you into the victory room.
There also is a bug currently, that prevents the green mist/goo from killing you at the top of the final staircase. You can use this to your advantage to time your jump into the clock right. You’ll have all the time in the world to do it… but you’ll probably slow down the reset timer for the other players in the process.
If you’re fast you have time for it, plus i do that puzzle to farm the bags.