Which is the last stable version of DW?

CS6 12.2 (the creative cloud version) was always very stable on my Vista machine.  I never tried it on Win 10 but I'm guessing it would perform equally well on that platform.

WebAssist extensions still work on CC 2014 and 2015 with the deprecated server behaviors add-on which you can download from DMX Zone's website.   I never had any trouble with CC 2014 on my Win 10 machine.  I could not make the same claim when 2015 first came out, so I reverted to 2014 for a time.

Today, I use CC 2017 and my sites are mostly database populated so the number of actual pages are relatively few.  However, I have a lot of backend php scripts and image files.  At most about 1,500 files.   CC 2017 performs well for me.  I have no complaints.  Maybe it's because I have disabled caching, I don't use file sync and I always work with local site folders that reside on my primary hard drive.

Nancy

Well, I agree... and it has absolutely nothing to do with server behaviors..

Anyone using the old SB's is not thinking about the future of the sites they are building. They are outdated, and so far behind in terms of future server compatability, that those using them should not be charging anyone for the sites they build with them.

As for everything else, yes CS6 does have a more professional feel to it, but unless you know how to write extensions, in order to bring the code hinting and completion up to date, it is also out of date. That does not mean any CC version is better, as even the 2017 version is not up to the job for the coder.

Dw has a different target audience, (according to the Dw team) apparently, and is now aimed at the user who is creating small individual sites, in which nothing innovative is required. That itself is not a bad thing, as such users probably make-up a very large number of Abobe CC subscribers, (though i do question if it is the majority). Enterprise developers, will never use Dw in any meaningful numbers, as it is missing too many essential and required features, the fact that Dw will not even consider including those essential features, makes me question if those the Dw team are asking what is required, and the decissions being made for the future of Dw is a waste of time.

Does the target audience of Dw actually require what they are including now, unlikely, and possibly irrelevant, yes the Dw team have a plan, and a roadmap for Dw, but they have no idea what type of developer will use the improvments, or how designers would wish to use what they are including. Picking items to include, just because they are the latest 'talked about' features, is no use, unless one knows when and how they will be used, and just as important, what they will be used for.