My single battery DNA 75c squonk mod gets noticeably better battery life. It's the pulse's chip that seems to be the issue, according to my observations. It just seems to be inefficient. On the DNA I can go through more eliquid on a single charge when using the same build and battery. It's substantial, around 4-5ml more.
I think your'e right about the chip. It's the worst performing mod I own. I was contemplating a DNA single cell but don't want to go down the road of improved but not good battery life.
Best performance I've had out of the Pulse 80, using the single coil Recurve RDA, is with a 7 wrap, 3mm ID, NiCr 80, even then it only marginally improves over a frame stapled alien at 0.26. If I was going out for a few hours with it I wouldn't feel comfortable unless I was taking at least one battery, likely two. Dread to think what it'd be like with a dual coil! I only vape at low wattages too, 25-32 mostly, how it would stand up at 60-70 W I don't know.
Makes me wonder if it would have been better had it been fitted with the intended Gene chip, I have a feeling the Vandychip has been talked up to a performance that in reality it doesn't deliver. It's usable, but won't remain as a daily driver once I replace it with something more suitable.
I have a Recurve mod coming too, plan to try them each for a day, see which is better on battery life. If the Recurve is better the Pulse 80 will likely go as a back up once the dual cell arrives, simply because of the battery life. Would have been even better, for me at least, had the Recurve been regulated. I suspect that will be coming soon.