What's even more sad, is that WD apparently doesn't understand how severe these problems are (or they don't see them on their internal development machines). WD is taking the stance that "well yeah, its shadowing software, so it should consume more CPU than backup software, because it has to constantly look for changes that may need to be backed up".
To which, I say baloney!
(1) If my bloatware Symantec can perform a full system scan, using less resources, and if Window's own file searching capability can use less resources when searching an entire disk file structure, then certainly WD's software can do the same.
(2) With all those HUGE temp files, its no wonder the system is crawling so slowly, as WD's software bangs away at those files.
(3) Speaking of all those huge temp files, what on earth can they be storing in them, that consumes so much space? To track files that need to be backed up, one only needs to know its pathname, the date/time it was last modified and the date/time it was last backed up. Judging by the number and size of all the temp files it creates on my system, there is a lot more waste (probably SQL overhead).
(4) Even when someone selects the "back up only the folders and files I've selected" method, this software consumes most of the PC's capability. I'll bet they're still "Categorizing" the entire disk, instead of only looking at the folders/files I've asked it to watch over.
You should have seen their last release of their software... it was all that PLUS it consumed a LOT more resident memory, and would hardly release the CPU if other apps needed it. At least the 3 or 4 applications that make up this software (more overhead!) doesn't consume as much memory as it once did.
The temp file thing just bothers me to no end. I am a software developer, and if I released software with such a blatant error, the fix would have been easy, and the patch would have been released the very next day.
As you said, "This is now a "Known issue", but unfortunately, it only appears to be known by us users on this forum. Apparently WD doesn't (or rarely) participates in their own forum, and I assume they don't treat these complaints as problems that actually need to be addressed.
WD WHY ARE YOU STILL SILENT ON THESE ISSUES?