The issues have actually diminished for me after I got a faster internet connection (it was never slow to begin with though), but there is still desync in my multiplayer games.

Both of my friends who play live on a different continent than I, and on opposite sides of that continent too. I get more lag with the one living the farthest from me, even significantly more.

No idea what it would be like with people living at least on the same continent as I, let alone the same country, but I'd imagine a shorter distance = less lag/desync.