I'm noticing that a LOT of people are off by around a frame or two on their retiming in this game. I'll take fault for it because I did a whole retiming of every run a long while ago and this problem STILL went overlooked, but now that I have it figured out, I'll give a quick rundown of how to know what time your run is based on your 1-1 framerule and 1-2 strat, and then an advanced tip you can use in last room to make it easier in unclear situations (suboptimal fast accels, accidental losses, etc).

Here's a basic rundown of the 1-2 strats:

TAS 1-2: Complete the UFA at the start, the frame perfect LR accel, and the UFA after the LR accel.

Only the Perfect Accel: Opt out of the UFAs, just complete the frame perfect LR accel in final room. If you skip the first coin on the left, you'll know you got the frame perfect LR accel.

Buffer Jump Strat: Instead of trying to land a tight fast accel, you can simply buffer a full jump in last room to guarantee a 2-frame save over a zero-acceleration final room, without the risk of messing up the accel and losing MORE time.

No Accels in 1-2: Just complete 1-2, no random losses, holding right the entire time, not bumping into any walls, etc.

Here's the difference in frames between each:

(-2) TAS 1-2

(0) Only Perfect Accel

(+4) Buffer Jump

(+6) No Accels

A difference of 3 frames is roughly 50ms, but sometimes differences will occur as it's actually ever so marginally less. No worries if you do not know the exact decimal.

This next section assumes you did not have any unnecessary time losses in 1-2. Here are the times associated with the 1-2 strats, categorized by the 1-1 framerule:

TAS Framerule:

1:33.995 - TAS 1-2

1:34.028 - Only the Perfect Accel

1:34.095 - Buffer Jump Strat

1:34.128 - No Accels in 1-2

Optimal No FPG / Sub-optimal FPG:

1:34.345 - TAS 1-2

1:34.378 - Only the Perfect Accel

1:34.444 - Buffer Jump Strat

1:34.478 - No Accels in 1-2

Basic Framerule (No FPG, Slower Speed):

1:34.694 - TAS 1-2

1:34.727 - Only the Perfect Accel

1:34.794 - Buffer Jump Strat

1:34.827 - No Accels in 1-2

You lost another framerule:

1:35.043 - TAS 1-2

1:35.077 - Only the Perfect Accel

1:35.143 - Buffer Jump Strat

1:35.177 - No Accels in 1-2

Now for the quick tip for complicated situations, but I should mention this only applies to runs within this range that do not have an easy, concrete answer likely due to either a random accidental time loss or an imperfect LR accel, and your recording needs to be in 60 FPS.

TLDW: Head over to final room and frame count the amount of "dark coin frames" there are before the screen turns black. A 1-2 with no random time losses and just the perfect LR accel will net 2 dark coin frames. Check how many more dark coin frames you have than the 2 for the just perfect LR accel run. That is how many frames slower you were in 1-2 within your designated 1-1 framerule.

If you're still struggling or have a 30 FPS run, you can try to compare to runs by Knightmare and Smythe, as they achieved suboptimal LR accels in their runs. No worries if you're off, I'll be retiming all future submissions anyways before verifying them, just thought I'd share though. Hopefully this helps.