Hi Ivor, in the RECONSTRUCTION tab, choose the desired quality of the reconstruction - Preview, Normal Detail or High Detail. This setting are sufficient for common model computing. You can see detailed information and parameters in the Reconstruction Settings panel in Workflow -> Settings, and if you wish, you can change them to your required values.
Once the model is created, you can see the number of triangles right next to the model name in the 1Ds view. In the Selected model(s) panel there is summary information on Texturing and a reconstruction Report, where the time of the reconstruction divided into individual parts can be found.