Drop in fps after applying different patches/mods

[jusagamerk26]

hi just a question why does my game suddenly has a drop in fps after installing scoreboards, courts, jerseys and the like? The normal fps for my system is a stable 60 fps but when i apply for example the tnt scoreboard my fps drops to 40-50 fps. Here is my specs:Intel i3-3210 3.2ghz, gigabyte h61m-ds2 3.0, 4gb ddr3, amd radeon hd 5500 series. Thank You

[ThePointForward]

They are more detailed which leads to heavier load for your pc.
Question is, if you don't get spikes under 30 fps why would you care?