Well, I removed a specific action on the s8 boss, restoring what the prior movie did. Sync after s7 returned. I changed the s5 boss exit, to show ammo on our other weapons then.
Currently trying to puzzle out how "lag-free" and "no damage" on s2 boss is even possible. I did go back earlier in the stage to find spots to remove "memory leak" from prior shots, and removed a little bit of red zone. I remember holding still doing nothing at the s2 boss was still causing lag during one attack, which was removed when we take damage. Well, this time, the hold still and do nothing isn't causing lag, so there's some slight hope of lag-free no damage run, but we're not left with much to work with.