Electrical schematics drawing software

[Jonathan]

Fair enough, I didn't think this one through - the signal should at least first be buffered (as the OP did) as we don't know the drive capabilities of the BOB and wouldn't want to adversely affect the signals to the driver optocouplers. Even so, as you say, there is a chance of the high di/dt causing issues elsewhere.

If obtaining the required brightness with any method requires operating above the LED pulse current rating constraints, then my proposal is moot. Although I would question how much the reliability matters here - after all the LEDs are just a neat accessory to the machine.