I don't know much, or nothing about programing, butt I find it strange that each new buid has to have almost 15 GB, couldn’t they just add content to what’s already there? I also notice that the download speed is much slower than normal, it will have to do with the purchase of bandwidth by TW? If something really fails between what is put there and what is provided to customers this is something to be investigated and has to be resolved.To be honest, no - speed of delivery has actually been pretty good in 1.5.x. From a rough look at the steamdb timestamps yesterday, a third of 1.5.x releases have cleared beta in 14/15 days; another third in 19-21 days; one took three and a half weeks, another six weeks (including holiday season), and then came 1.5.8.
TW's delivery problems* have always seemed to be in code branching/merging / version control / build/package quality. The admission last week that some bugs weren't reproduced on internal builds as on Steam builds wasn't a surprise, but should highlight a flaw in their processes. I vaguely remember talking about this last summer, too - it might even be an area of development that is negatively impacted by disrupted work patterns/working from home more (if they still are). Disappearing textures and commonly recurring bugs all point to build/code merging issues - quality control. People regularly ask why TW testers aren't picking stuff up; they won't if the issues don't appear in internal builds and no one tests Steam builds - so the build process needs improving, and someone at TW needs to be validating Steam builds. Arguably, improving that process might need to slow down the delivery cycle a little, to add in a Steam build test/validation phase.
*they might also have some design/management issues, but that's more subjective and we don't necessarily know their vision.