Resolution of exported slides: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\PowerPoint\Options > ExportBitmapResolution (DWORD) > resolution in DPI (Decimal), e.g. 300
FontType is "mj" or "mn" for Major (headings) or Minor (body) respectively.
FontLang is "lt", "cs" or "ea" for Latin, Complex Scripts or East Asian
For example to set the font to the theme's body text font for Latin text: ActivePresentation.Slides(1).Shapes(1).TextFrame.TextRange.Font.Name = "+mn-lt"