Questions and answers
Very low frame rate in visuals
Graphics card of your computer is not quite fast for visuals. Set "Basic visual quality" in Exercise manager/Options/General.
No radar picture on radar PPI
Low gain or low tune. Move TUNE slidebar into middle position of Big generic marine radar. Or increase GAIN.
What is "Live equipment on visuals" in Exercise manager Options?
If checked, the simulator displays screens of equipment inside ship bridges :
This slows down program's execution.
Target not visible on radar PPI
There is a number of possible reasons. Low GAIN or low TUNE. Or, most likely, target is out of radar horizon.
Visualisation screen is black
Screen of Visuals can be black if to set night time in Weather/Time menu of Exercise manager.