I'm sorry but I must recall this old post related to the build 3.1F: viewtopic.php?f=25&t=17316&p=142378#p142369
I supposed to have fixed the issue, because I found unchecked the DirectX option "live frame buffering"...On the contrary the problem is still present, if you try to work on wireframe!
And a German friend of mine confirmed he has the same issue using 3DSimED on a totally different PC, but that uses an AMD R7 370; I use an AMD R9 380, both same latest version of drivers:
Versione impostazioni di Radeon - 2017.0210.908.16431
Versione del pacchetto di driver - 16.60.2011-170210a-311139E-ATI
Fornitore - Advanced Micro Devices, Inc.
Versione driver 2D - 220.127.116.111
Direct3D® Version - 9.14.10.01249
OpenGL® Version - 18.104.22.16869
OpenCL™ Version - 21.19.519.2
Versione AMD Mantle - 9.1.10.0179
Versione API AMD Mantle - 102400
Versione del driver audio AMD - 10.0.1.0
Vulkan™ Driver Version - 1.4.1
Vulkan™ API Version - 1.0.37
The problem appeared also with previous AMD drivers... In addition I tested it with a lot of models and I have always the same issue.
Can you please Dave, investigate a little bit in deep? Because it is very very difficult to work on vertex, etc... if each time you move, rotate, zoom the model disappears! Thank you very much.
I attach a self explanation video.
Can you somebody here in the forum try to move a 3d model of a car (WIREFRAME VIEW) to see if it suddenly partially disappears? Then zooming in/out the whole wireframe appears. Thank you