I will say that I always configure my swap to be equal to my ram.
2.1gb seems low to me... But gnome will try to index everything in the background and that uses a ton of resources.
If you're on a fresh install while syncing blocks, it I would expect your resources to be pushing the limits. Doesn't really matter though. Just let it ride. I think it took me 3-4 days to sync to the network with the default settings.