Time taken to reach orgasm with e-stim

I've noticed that most times after wiring up to my (one channel) estim equipment there is a time right after turning up the intensity to a comfortable level that I feel an almost irresitable urge to orgasm. I usually turn the stim level down at this point to contine to enjoy it. On a few occasions I have continued and the stim does result in quite a quick HFO. Beyond that initial sweet spot, the time to orgasm can be a couple hours. Part of the issue is that I use stereo stim and can't resist the urge to change frequencies, pulse widths. repeat rates and the like that interrupt the initial stim. Not sure if this is due to the destraction of constantly looking for a new and different waveform, or just getting used to the sensation. I've found that stimming at a barely peceptable level for a while, (perhaps looking at some interesting porn), kind of builds a bank of feelings that make me likely to cum pretty quickly when I turn it up. Not sure if this is just a "me" thing or if there is something to be learned. So many folks say they like the sensations, but no HFO. After quite a few years of doing stim, its a very rare time when I don't reach the HFO, and of those, most are simply that something else needs done, and I've interrupted the sesson and come back later to finish. Anyway thought it might make for some interesting discussion.

I have orgasmed as quick as 2 minutes but prefer to take my time and enjoy the feeling

Anything between 5 minutes and 30 to 45 minutes. Too long and I can't come without turning up the stim to stupid levels, and sometimes not even then! I did once experiment by just turning on and turning up to max, after the initial oh shit moments I came in about 2 minutes.

I bought a Prospera Electronic Pulse Massager. I have been using it for a long time. I can get some very enjoyable sensations, but nothing approaching an orgasm.

https://i.ebayimg.com/images/g/yWUAAOSw-o9kI3Mm/s-l1200.jpg

You have to play around with different electrodes, different level settings, different patterns, electrode positioning. there are lots of info on discord.com