3S Lag Results - Spreadsheet
CPS3 - 3.6
PS2 - 4.7
PS3 (filters off) - 3.8
PS3 (filters on) - 3.8
360 (filters off) - 4.1
360 (training mode) - 3.9
Dreamcast - 6.
Emulated 3S Lag Results (Excluding Monitor Lag)
FBA (aero on) - 6.0
FBA (aero off) - 4.6
Shmupmame (aero on) - 5.4
Shmupmame (aero off) - 3.8
Shmupmame (fullscreen aero off) - 3.7
Emulated 3S Lag Results (Including Monitor Lag)
FBA (aero on) - 6.5
FBA (aero off) - 5.1
Shmupmame (aero on) - 6.0
Shmupmame (aero off) - 4.4
Shmupmame (fullscreen aero off) - 4.3
*All these averages should be +/- 0.5 frames of the actual lag
Platforms Tested - CPS3, PS2, PS3 (PS3 with filters on and off), 360 (and 360 in training mode), Dreamcast, FBA, and Shmupmame
Here’s the setup we used:
I wired the hk button and an led to a DPST switch so that the led lights up as soon as hk is pressed.
Video was recorded at 120fps.
We recorded Chun whiffing far hk (since her far hk has an obvious first frame of animation) 50 times for each system.
An MC Cthulhu dual modded with a hori pcb was used for PS2 and PS3.
A non-dual modded hori pcb was used for the 360 and for the emulators
A stock dreamcast controller was used for the dreamcast.
A CRT was used for the consoles and CPS3
We made sure the crt’s “screen tear” was above chun’s head on the console ports.
An LCD monitor (Dell U2312HM) was used for the emulators
I’ll refer to frames output by whatever system is being tested as a “gameplay frame,” and a frame captured by the camera as a “camera frame” since the frame rates are different.
I counted the first camera frame where the led is lit as frame 1, and I counted the camera frame where the move visibly starts up as the last frame. I then divided this number by 2 to get the lag for 60fps with half a frame of precision.
Something I noticed is that CPS3 was not displaying frames in sync with the camera, whereas every other console is in sync with the camera for the entire video. This is because the consoles refresh at 60Hz and CPS3 refreshes at 59.583 Hz, which means that each frame on CPS3 is displayed slightly longer on CPS3 than on console. This isn’t really new information, but it’s for whoever didn’t already know. The difference in length of each frame from CPS3 to console is only about 110μs. There’s some images below that help illustrate this.
Here’s two halfs of a frame from CPS3.
Here’s two halfs of a frame from CPS3 somewhere around 1 second later.
Here’s two halfs of a frame from the PS3.
Here’s two halfs of a frame from PS3 somewhere around 1 second later.