Hello hd46510,
"GDI generic" in the Console pane usually means that Windows Remote Desktop is used to connect to another computer. Using WRD doesn't allow to utilize GPU of the remote computer neither for OpenGL rendering, nor for processing. So I can consider to use TeamViewer, VNC or any similar application for the remote connection.
Alternatively, you can create a simple batch file that will disconnect your remote desktop session and immediately start PhotoScan, if you reconnect after a few seconds you should be able to utilize PhotoScan as it has been started before the remote desktop session has been initiated (you may need to run it as adimistrator):
tscon 1 /dest:console
START "Launching PhotoScan" "C:/Program Files/Agisoft/PhotoScan Pro/photoscan.exe"