Clicking on WHM logo takes longer to load homepage compared to opening any page from left sidebar

Hi, When i click on WHM logo after logging in, it takes around 10 to 15 seconds to load homepage. After clicking on logo and then if i right click on any link in sidebar and open in new tab, the second tab opens immediately but still the previous tab keeps loading. I am facing this issue only when clicking WHM logo, and if i click WHM again immediately, it loads instantly.