Definitely one of the hardest easy puzzles. It looks simple, but to get a fast time is kinda hard.
Misfortune Modifier - 45-1-79
It seems easy, but just play the puzzle. What this is a state machine, which abuses the random inputs to output 10 molecules. It is generally the best way to solve a random input sequence problem.
Sun Simulator - 128-1-29
All this is is an even splitter - it sends one hydrogen up to output helium, and one hydrogen down. It's not even close to be the fastest, because it doesn't use the Split command and a glitch.
Misfortune Modifier - Input Island 232-1-28
Unlike the original, this is restricted to only using half the available space. This is a general solution and will work for any input. But you can build a state machine for this, impossible as it sounds.
Week 2
Counting To 100 71-1-31 Essentially, the trick to this puzzle is balancing outputs (besides the initial trick about splitting theta). I didn't do that so well, as you get 2x more Fermium than Thetas, so that's why this ends up decently slow.
Three 2373-1-34 This was a low symbols puzzle, meaning that it had to be the lowest symbols rather than fastest. I think the problem was just creating the big molecule. I had to have three seperate paths in order for this to work properly, which cost a lot of symbols.
Precious Oxygen - 2-784-1-104 This was a "least waldos" challenge, meaning it had to use 1 waldo to be a good solution. And yeah, I just didn't know how to do this effectively in just a single waldo. But in this one, I just split both atoms to get Zirconium and Chromium, fuse those to Gadolinium, store the rest as Samarium waste, and then output 4 O2, using flip flops to count to 8. It's very complex, and was a participation solution in every sense of the word.
Week 3
Hypothetical Synthesis - 135-1-47 Involves particle smashing, although it can be done without it. Slow, if because it takes a while to get to the output and back. Plus, you can avoid doubling back over itself, which really slows it down a bit.
Superhydracetaylne 248-1-49 This one requires particle smashing. You could easily shave ~70 cycles off this one because the uppermost left bonder isn't actually necessary, meaning you could get rid of that 3-loop and put it on the outputs.
Intro To Templates - 463-1-71 Well, if I talked about it, it would essentially give the secret of the puzzle away. So yeah. You can move the bonder to the left a little, and that would make it faster.
Week 4
PVC V - 510-1-32 Participation solution.
Better Than Graphene - 3759-1-50 Participation solution, again. Not a great week for me.
Liquid Glass - 1235-1-29 Yet another participation solution.