MM1-6 timing stats

Note: This information was recorded by personal observation and may not perfectly reflect how the game mechanics work in all situations. It is considered mostly accurate, but some nuances may have been missed.

=Screen Scrolling=
MM1: 125 frames
MM2: 125 frames
MM3: 80 frames
MM4: 120 frames
MM5: 60 frames
MM6: 120 frames

=Menu (In and back out)=
MM1: 45 frames
MM2: 45 frames
MM3: 40 frames (+25 for page switch)
MM4: 77 frames
MM5: 75 frames
MM6: 110 frames (+32 frames for adapter animation)

=Boss Health Bar Animation=
MM1: 54 frames (+13 frames with no input)
MM2: 108 frames
MM3: 108 frames
MM4: 216 frames
MM5: 108 frames
MM6: 108 frames

=Boss I-Frames (entire duration)=
MM1: 29 frames (Guts, Ice, Fire, Bomb), 62 frames (Cut, Elec, Copy Robot), 9 frames (Wily Machine)
MM2: 18 frames
MM3: 25-28 frames (based on a 4-frame rule)
MM4: 48 frames
MM5: 48 frames
MM6: 60 frames (robots), 33 frames (castle bosses)

=Big Pickup (10 ticks)=
MM1: 39 frames (plus horizontal movement interruption)
MM2: 86 frames
MM3: 33 frames
MM4: 40 frames
MM5: 40 frames
MM6: 40 frames

=Rush Summon Time (from pressing B to Rush reaching the ground)=
MM3: 33 frames (+46 frames in menu animation)
MM4: 43 frames (+37 frames in menu animation)
MM5: 18 frames (no extra menu animation)

=Mega Buster Charge-Up=
MM4: 91 frames
MM5: 80 frames (charge-up timer pauses during a slide)
MM6: 90 frames (each individual slide makes the charge-up 1 frame faster)