UPDATE FROM MABULA
I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred  after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.
Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.
APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46. Â Before I release it, I will make sure that everything is working properly and then I will release it.
I've done a few processing runs using LNC , and processing has taken a very long time. This morning I'm working on a stack of 40 DSLR frames using 4th degree LNC and 3 iterations. After working more than four hours on the data, the Integration step is only 50% complete. My machine is very capable -- Win 10; 6 core 3.70GHz CPU; 32GB RAM; a good graphics card. Are long working times like these to be expected? Adding DDC adds much more processing time. Thanks.
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Joe
The obvious question is: why do you enable LNC, particularly 4th degree LNC and 3 iterations? What do you expect to gain with that?
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Wouter
@wvreeven I have resolved processing-speed issue.  But to answer your question: I'm processing a series of 42 DSLR images of the NEOWISE comet with strong color and brightness gradients, images shot in multiple sessions with changing light near dusk. LNC and advanced normalization is suggested for this situation.
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Joe
@jehoener Yes that of course is a valid reason to use LNC. I was merely asking so I may learn from your reasoning.
Congrats on solving the processing-speed issue! How did you manage to do that?
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Thanks, Wouter
@wvreeven Wouter. I have a new computer with multiple internal hard drives. I was running APP on the C drive while my data was stored on the D drive. I learned that temporarily moving the data I'm working on to the C drive will allow APP to process it much faster. MUCH faster!
I also made the mistake of transfering files at the same time from an external USB hard drive to an internal drive. I didn't know that doing that would interrupt the CPU's work on APP and slow things down considerably.
Thanks for sharing the reason! Yes APP writes a lot using the disk for processing so the fastest disk and access to it is recommended. Probably the simultaneous writing going on in the background was the biggest factor?
