Facebook app is lagging when scrolling

[Android Central Question]

I have a 4 month old Samsung J7 Pro and recently I've experienced a lagging issue in Facebook. Whenever I scroll in my news fees, it lags the same as if you have an fps drop in video games. I never had this problem in the last couple of weeks. I already did clear the cache, run device maintenance, and the likes. What I did gather is everytime I reinstall it becomes smooth as a butter, but when I start to play a game, then go to Facebook, it starts lagging again and doesn't dissappear despite closing the said game. What could be the cause of this issue? Its starting to get annoying. Any help/fix is appreciated!