Are you using the latest Bmax level?
Search for 'mouse lag' in the Bmax forums as there is anb oustanding issue in windowed mode (and that might even be fixed with latest syncmods).
It's always useful to provide small example code showing the problem.
Search for 'mouse lag' in the Bmax forums as there is anb oustanding issue in windowed mode (and that might even be fixed with latest syncmods).
It's always useful to provide small example code showing the problem.