Absolutely the same for me. I was ready to bag G6 and move back to G5 until I soaked the sensor and backed off on repeated calibrations. I also found using very light pressure on the inserter also helped.
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Whether I soak a sensor or not, I DO NOT CALIBRATE. I leave it alone. I have yet to have a sensor that wouldn’t come back into a safe level.
The first couple sensors I calibrated because they were off. I think this was helpful at first, but still would have been better to just leave them alone.
If you want to test to know what your numbers are, fine. But I suggest not calibrating unless the sensor is really far off after you first 12 to 24 hours.
All of this is just my opinion. It is what works for me.
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Is there a reason that the G6 (which I love!) is so bad in the first 12 hours?
I’ve found myself intentionally going to bed with higher than usual sugars, otherwise my first night with the G6 is all LOW warnings and I end up turning it off!
It fixes itself the next day, and doesn’t happen again, but it’s really frustrating that every 10 days I get a bad night’s sleep 
(this is for a brand new sensor, I haven’t rolled over a sensor yet)
I think a lot of us get the false lows.
Reason for it? Maybe they are wanting to be super cautious with a system that doesn’t ‘need’ calibrations?
Or maybe the new sensor just takes longer to settle in.
I had issues in the first day with the G5 as well, just not as much as I have with the G6.
Soaking a new sensor seems to have solved, or at least mitigated most of the issues.
Also, don’t put a new sensor in before bed. I cannot stand the urgent lows where it says I am 40 when I am really about 80 to 90.
I have rolled over couple sensors now. I am not pushing them out super long yet. I am only doing it to get the 14 days so I can start soaking my sensors on Saturday night and insert a new sensor on Sunday morning. This system always worked very well for me, so I do what I can to make the G6 last a little longer.
Since I had to change sensors twice yesterday and was awakened twice with erroneous low alarms, one of them “urgent,” i totally sympathize.
What’s weirder though, is what happened with my first one. Once it came out of the warmup it almost immediately plunged into Urgent Low and beyond, finally bottoming out with no reading at all, just the warning, which I guess means it hit zero. So I called Dexcom, did a bunch of checks, determined it was the sensor that was the problem, they explained that this is how the transmitter reacts when it’s basically not getting any info from my interstitial fluids. They said swap to a new sensor and we’ll replace the bad one.
So I do that, only when I rip the “bad” one off, lo and behold: a blood spot. I’d hit a vessel when I inserted it. What’s weird to me is that with the G5 I’d gotten used to dealing with the occasional bloody insertion, and while the first 24 hrs were pretty shaky, it was best to just wait it out and it would settle down and be fine for the usual length of time. With the G6, hitting a vessel just completely incapacitated it. I mean it was not eccentric, it was zeroed. Is that a new thing with these? Anyone else experience this with a bloody insertion?
I have hit blood. No gushers yet, so not really bad ones.
Didn’t seem to make anything change.
Yeah, mine wasn’t a particularly bad one, but I’d felt that little “ouch” going in that’s usually a bad sign, and when I pulled it off there was a bloody spot. Maybe just coincidence, I dunno.
I hit blood once too, you could see it around the edges. So I tested a little more than usual and it was fine. But I don’t seem to have much of a problem with the warm up period, only a couple of hours for me at the most. I do put them on my arm.