After a lot of research, my question remains unanswered... For some time now, when I want to move my drawing in a presentation, I can move it vertically without any problem, but horizontally my drawing only moves in steps of several meters, which does not allow me to adjust the position of my drawing in my presentation.
You have to double click on your frame in your presentation space and then you can move your drawing as you wish. Or you go through the command line at the bottom and you type modelmodel then enter, you place your drawing as you want and then in the command line you type sheetmode so that your drawing doesn't move anymore.
Otherwise I don't know if you looked in the options and checked some options that maybe shouldn't but did you try to reinstall the latest draftsight without touching the options.
Draftsight available here: http://www.3ds.com/products-services/draftsight-cad-software/free-download/