1. I tried changing the timing at the end of level 4, but it doesn't change the level 5 spawns.
2. If I walk left and pick up the money bag, it changes the platform spawn. It ends up saving 6 frames.
3. The boss fight ends up 21 frames faster because of the 36-frame delay on the ladder. Never would have thought that. The platform change may impact the delay here.
So it looks like there are a few more frames to go back and save.
ERROR72 showed off this damage boost at SGDQ 2018 (timestamp 19:24):
Link to video
After seeing it, I didn't think that it would save time in a TAS, but I checked to be sure. It doesn't save time.
The birds are on a fixed timer and appear about every 5.6 seconds.
The timer starts when you jump across the little water pit right before the house.
(And so fighting the big guy doesn't lose time because you have to wait for 3 bird cycles anyway.)
You just need to get to the upper right part before the 3rd bird appears so that you can damage boost out.
There's still no way that you can get there fast enough to use the 2nd bird with the boost.
Even if you could, it's slower because of the setup at the 1st bird.
Instead of moving up and right, time is wasted going left and waiting.
In fact, the time lost using the 1st bird for the boost makes you too late for the 3rd bird, too (if you kill the 2nd bird so the 3rd bird appears).
It's a cool damage boost though.
My test here:
When did you kill the 2nd bird on that attempt? I'm guessing directly by doing a backward kill, hence the late arrival for the 3rd bird?
But what if timing the kill so that the 3rd bird spawns and reaches the ledge the same time you get there?
I'm no taser. Just throwing out ideas. I like the boost. <3
Keep in mind that the reason to try this boost was the theoretical potential to cut down from 3 bird cycles to 2.
Basically, when you jump across the water pit, the 3rd bird says, "I'll meet you at the top right of the house in 16.8 seconds so you can boost out."
If you get there in, say, 13 seconds it doesn't matter, you have to wait for him.
What I was hoping for was that I could say something like, "No thanks friend, I'm meeting the 2nd bird there in 13 seconds."
But if you use the 1st bird to boost, it's not even possible to reach the meeting spot in 16.8 seconds (which would merely tie the current time). It takes like 18-19 seconds.
If you delayed killing the 2nd bird, the 3rd bird to appear would not be at the normal time of the 3rd cycle. It would be later.
I think I found a thing? You can get across the platform pit in level 1 a bit faster with a damage boost. I made a (likely unoptimized) test TAS and timed it to be 54 frames faster than the level 1 in the current published TAS.
Link to video
and the fm2: http://tasvideos.org/userfiles/info/49962426560015498
Hopefully someone finds this useful.