This doesn’t necessarily sound like an issue with too little RAM. Something for @support to look into when this topic reaches the top of their queue.
It holds the executable program code and data (like your Roon database).
This may help:
If you only have one stick of RAM, there may be a tiny bit of performance found by using two sticks instead, because this can be used more efficiently. But it’s not a game changer if performance is not satisfactory.