Why cant i get 60 fps on borderlands 2

For some weird reason im not able to get 60 fps on and 8 year old game and that game is borderlands 2 is there any thing I could do to fix it i also cant get a constant 60 fps on gta 5 online or story mode i use shadow boost and im in the us i play on 1080p btw i can get above 60 fps on warzone and that has way better graaphics than borderlands 2