If you are having troubles with your Evo 3D, and you've already looked through this thread:
[OFFICIAL SOLUTION FAQ] Having trouble with your EVO 3D? Click here!
you should consider contacting HTC directly through their email support website:
HTC Mobile Phones - Customer Service - E-mail Support
Please be as specific as possible, including the serial number it asks for toward the bottom of the form (found on the phone under the battery), what version of Android/Sense you are running
(found at Settings > About Phone > Software information> Software number), and a detailed description of your problem.
If your problem is a known issue, meaning lots of other people are complaining about the same thing, please still submit the email with HTC so that they know that it is a widespread issue. This will help them prioritize their fixes.
If you're not sure if your problem is worthy of reporting, feel free to use these forums to bring it up, and members can chime in to see if it's something that can be fixed or if there's really a problem with the phone.
It does appear that these early software builds for the Evo 3D are buggy, so I'd encourage more people to report their issues to HTC.
Thanks to jamexman
for originally bringing this up (see post below).