thanks for your comprehensive reply!
For the issue of not beeing able to constantly record at the highest frame rate, I am pretty sure that the problem lies somewhere in the SATA connection of the SSD. You were totally right that I am at 8 bits, as 12/16 doesn't make much sense for lunar imaging. Using firecapture, USB3 live preview constantly runs at 19fps, no stuttering. If I start a recording at full speed, I can watch the buffer diminishing, and when it's used up, recording continues at very low frame rate. I can also watch the difference between "Frames captured" and "Frames saved" instantly when recording full speed. So it seems to be clear that my computer is not able to transfer the needed 400MB per second to the SSD, what it should easily achieve per spec. I have an up to date laptop running WIN 10, and I will install Firecapture on it and see how it performs in comparision to my old but still ok workstation (which is an Intel Core i7 970 hexacore @ 3.6GHz, 32GB Ram).
I was using horizontal and vertical blur in Autostakkert!3 to prevent the grid artifacts, but the problem was, as soon as I turned it on both ways, Laplace delta returned an unusable quality graph. Switching to classic gradient solved this issue, but I still have artifacts. Not even close as bad as without blurring, but visible. I was capturing at Gain 0, and from what I've read, this might likely contribute to the issue.
I was testing out Planetary System Stacker, but my results were not as good as with Autostakkert!3 and it crashed on batch processing. That said, I want to make clear that this is absolutely due to my inexperience with the software. I was using it for the first time on this project, and I read the manual . I will need to get more comfortable with it and get a feeling on how it behaves, then I am sure it will return excellent results, I'm not just there yet. So I lost patience and returned to AS, that I have way more experience with.
Which brings me to a point I completely forgot - I was looking if there's any software that helps me capturing my panels and stumbled across "Moon Panorama Maker", also by Rolf Hempel, which is just INSANE. I was hoping for a program, that somewhat simplifies that process, but MPM is incredibly feature complete! Just as an example, the build in Drift Correction works even better than Pulse Guide, that I am thinking of "misusing" this feature for unguided DS photography. So my big thanks and kudos go to Rolf for giving away freely this complete package to us fellow moon addicts!
EDIT:Typo (non native )
Edited by sushidelic, 14 February 2020 - 12:03 PM.