Minimum reasonable time for a foot switch?

I've been trying to step some songs with foot switches, and for one song I've been working on, I can't eat my own dog food. I added a foot switch 16th note at a tempo of roughly 105. Is it a reasonable expectation to be able to foot switch in that amount of time, or is this asking a bit too much? There are other 8th note foot switches in this step chart which I'm able to do just fine.

I can pass along the partially finished simfile if anyone wants to try it out and let me know.

I played a chart that utilizes footswitches on 8th BPM300 (16th BPM150 with the same quantization) and I can do it well there. I think what matters most is if you give it a clear mark whether it's footswitchable or not.



Chart taken from "Architecture / DJ Myosuke & Noizenecio [Fraxtil]" from pack "SPEEDCORE 4". I think as long you give the player a mark to footswitch, you can put any speed you want for the footswitch.

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It depends on difficulty as well. For example, a footswitch on a 105BPM 16th would be best left for charts about a DDR 13 / ITG 9 and up. A footswitch on a 150BPM 16th like in CLOUDIO's example would be too harsh for anything under about a DDR 16 or 17 / ITG 11. Of course, this assumes you're only using 2 or 3 notes max. Use your best judgment and you should be fine for the most part. ITG tech/FA files use high-speed footswitches very commonly, so looking at files from popular packs would be a good way to figure things out.

Another factor of note is whether the footswitch is on down or up. For most players, it's significantly easier to perform a down arrow footswitch than an up arrow footswitch, so if you feel like a pattern might be too harsh it's best to put it on the down arrow

Thanks for the advice! Sounds like I need to get better at the footwork.

My understanding is that footswitches are generally indicated by a mine which forces the current plant foot to move when two notes consecutively. Have people tried marking footswitches as "optional" by putting a mine in a different column and still having two notes consecutive, or is that not standard?

Not standard, but not unheard of either. If a footswitch pattern leaves very little room for a mine to force the footswitch, it's common for the mine to instead be placed on another column