Why is my minecraft capping its fps at 60 when i have optifine capped at 120?

So i opend my minecraft today and press f3 to realise that i have 60fps? I usally cap at 120fps but in my settings its ment to be at 120? I've never had this problem befor

Someone please help!

Reinstall optifine, and check vsync is off. And are you sure your monitor has a 120hz refresh rate, if not there's not point in have an fps anything more than your monitors refresh rate as that is all the monitor is capable of showing. Most have a max of 60hz, some can go to 120hz and a few can do 144hz.