Please help, my game is very laag!

Hello, I need help, my game is really slow, this did not happen until now, I have the graphics, animations to do better, my pc is good leftovers to support this game.
PC:
8GB RAM
NVIDIA GTX980
INTEL I5

Do you have any mods installed? Are your drivers fully updated? Does you computer have a virus?

No virus, full updated, yeah i have mods.

and that is that we pass it and open, and I will not really lag and spor my pc, nor by the mods, because before I used them, nothing 1 day, last night, and today pum lag

Can you think of anything that changed recently? Did you perhaps update your graphics driver? Or, install a new sound driver?

No.

Please help ;c

Are there any programs running simultaneously that might interfere?