Ch2:
http://dehacked.2y.net/microstorage.php/info/997106232/0378%20-%20Fire%20Emblem%20-%20Fuuin%20no%20Tsurugi%20%28J%29.vbm
May as well post my progress so far. This is a 74 frame improvement over the previous WIP to this point. Annoying issue is that I'm planning to use Roy for a bit of combat in ch5, so ideally I want to get his Str up a bit. Unfortunately, getting the double-crit and surviving the enemy phase in ch2 cannot earn Roy a Strength point, not within the first 2000 RNs at least (I didn't check further, but it would cost way too much time to manipulate anything after the first 500). I might have better luck with the level up in ch3. I may also have to take another level up for Roy from ch2 (gives HP, Spd, Def) if he needs to double more stuff, but I think I can get away without that Spd point.
So, the improvement so far has come from improved RNG optimisation and lag reduction mostly (turning off combat display, and the terrain display reduced lag), and I skip the ch1 turn 1 cutscene earlier. Other than that, no real visual change has occurred yet. Things will start happening in the next chapter though, as I have to kill off 2 units before ch5 starts to reposition Alan in the right place. I won't really be able to judge any improvement until the end of ch5, so I'll post a WIP then. Stay tuned!