How to visualize data for 1month or more

Hello everyone,
I have graph for all ports on my cisco switch . Everything goes well if i try to visualize data for 1,3,12h but when i want to visualize data for 1month or more grafana get extremely slow and i have to wait for long time until visualize the data also my cpu start overloading … Please any suggestion on how to export image on my 1month graph without visualizing it first.

When looking at 1 month or more you probably want to change the interval so that the number of returned points is decreased - a huge amount of points may otherwise overload the browser. What datasource are you using?