I apparently have some software failures for a long time for now. The main sign is that the rendering quality of the open gl always deteriorates. It goes from high level of quality to the low one with no reason. Mainly the textures just disappear. When I am trying to fix it manually in Open GL rendering options, sometimes it helps but usually not. Also the vectorworks closes accidentally when I am trying to save my work. I have the updated version of vectorworks 2021 and my laptop is not overloaded, so it is not related to that. I also have other problems especially in the way rendering function which neither my tutors nor me cannot fix. So I need to realise why these glitches appear and how to manage it?
