loading large number of layers decrease PC speed

when selecting map notes, maps data and more layers it hard for the PC to load and present
what can be done to solve? is it a HW issue or can be solved via SW?

You really do not want to have the data layer activated except when zoomed in very close or when you know data are sparse. In most well-mapped cities having the data layer will push lots of data to your machine which then has to try & handle it.