200bpm
Having read some older posts, there appears to have been a problem with bugs for X3a-d, so I attribute the resistance I'm getting to the loyalists being gun shy; they would rather dismiss a new user's problem than entertain that there is a bug that will impact his use of the product.
I believe the resistance you're getting is due to not following community protocols that were established long before you or I joined. There have been posts where what you identified as a potential bug was not a bug, like when you tried to create an instrument by dragging it into a track that had already been created. It's like the story about crying wolf. Do it enough times, and people will stop taking you seriously.
The protocol is this: If you find a "bug," give steps to reproduce it so others can help determine whether it is a bug, your lack of understanding of the program, or something that might be system-specific. If a bug is confirmed and can be reproduced, submit a bug report to Cakewalk so it can be added to the list of remaining bugs and prioritized.
Note that saying "I loaded a file and it took a long time to render at 24/96" is not sufficient to qualify as steps required to reproduce. In the past, when people have wanted others to check results regarding a particularly problematic file, they post it in dropbox or use a service like hightail.com to provide a link. It may just be that AudioSnap is doing lots of calculations. Or maybe "multiprocessing engine" was turned off somehow under preferences.
Some people have reported
huge render times where the problem ended up being the floppy disk port enabled on the motherboard in a system with no floppy drive. Someone had huge render times for Kontakt instruments that no one else experienced, and IIRC it turned out to be due to having a blank disk in the computer's optical drive. These issues were found only because no one else experienced them, so instead of being distracted trying to find "bugs" in Sonar that didn't exist, the community (which with all due respect, has a lot of people who are much more savvy about these things than you or I) was able to localize and fix the problem. I doubt anyone will be able to provide a definitive answer to solving your issue based on the information you've provided. If you want a problem solved and cannot figure out how to solve it yourself, you will need to provide sufficient data so that others can solve it.
That said, AudioSnap is complex and not trouble-free. I find it far more predictable if I work on individual sections of a file instead of really long files.
People who have been using Sonar for a long time generally agree that X3 is stable by any reasonable standards. This is due in large part to this forum, which is not based on adversary relationships. It is a
partnership between the user base and Cakewalk, who both seek to have Sonar be the finest software possible. By the community providing important data, and sometimes even sending projects, Cakewalk's engineers can not only find and track down bugs within Sonar, but compatibility issues with third party software and system-specific issues that would be
very hard to find without Sonar getting into the world onto a huge variety of systems running a huge variety of software.
Finally, it's amazing how many intractable problems are solved by a clean Windows install. The more programs you install, particularly if they're of the same type (e.g., a bunch of different DAWs), the more likely there will be conflicts with unpredictable results.
P.S. It would be helpful if you could give some clues as to what's not in the documentation so others could benefit from your experience with tech support.