First of all check our troubleshooting section HERE which might containt solution to your.
If you are reporting a bug then check if it's already on our Trello board HERE.
If you can't find a solution to your problem or when you are reporting problems related to graphics/artifacts/quality include all files (update.log and StreamView.log might not be present) found in {RiftCat 2 installation folder}/logs. Your log folder will probably look like this:
Also, please include your DXDIAG file. See article below to find out how to create this file:
http://windows.microsoft.com/en-us/windows-10/open-and-run-dxdiagexe
In total, you should e-mail at least 3 files as attachment; Riftcat.log, VRidge.log and the file created with DXDIAG tool to support@riftcat.com