I noticed when I drag the window around, the application stops updating itself. It resumes once I stop dragging the window around. This isn't a big deal for singleplayer games, but it's breaking a multiplayer game I'm working on.
From digging around the SFML forums, it seems this is an unresolvable issue relating to how Windows works. So, I was wondering if anyone has any tips or suggestions on how to work around this.