The issues with Facebook's Android app have been well documented and it's even been such an issue that Facebook's central item officer Chris Cox made staff get rid of their iPhones to better focus Android issues. A representative for the social media site told Tech World Zone, "We have heard reports of a few people encountering speed issues coming from our Android application. We are investigating this and will update you as often as possible. We are focused on keeping on enhancing these issues."
It's worth noting that just because a few independent tests have confirmed issues, that doesn't make mean it's true for everyone. There are many variables at play and to 100 percent confirm this is a universal problem, more tests would need to be run. But you can test your own phone and discover if the app is causing issues for you.
The solution if you are having issues? Deleting the app works. But if you have to post political rants in order to engage in a fight with a distant cousin who you can later cite as a reason you're not going to Thanksgiving, there are other solutions out there. In particular, you can access Facebook via a web browser like Chrome and it works pretty well with Android.