Can you define bad? Which model do you have exactly? And what games are we talking about?
If I take for example a R7 240 on a game like CSGO, PUBG or fortnite, you'll be getting sub 30-60fps on the lowest settings. The 1% lows are so bad it can be sometimes a slideshow.
Its an old card, maybe its time to move on.
The Englishman