Since upgrading to windows 10, the size of the steps the volume jumps on rotating the mouse wheel have massively increased from 4% to 12% or more making it difficult to set the volume satisfactorily with the mouse wheel. Keyboard Page up/down still work correctly at 4%. I have reduced the mouse wheel scrolling setting in windows 10 /control panel/ vertical and horizontal scrolling from 3 to 1 and it made no difference. Upgrading DVBViewer Pro to V 5.5.0.0. has made no difference. Does anyone know how to reset the size of the volume percentage steps from the mouse wheel back to 4% ( or to 2% even better)?