Lag spike when moving player

Question

The player is a panel, and it is getting removed, its position changed, and then re-added to another panel (which is what contains this method) which is drawn to the main fr

Answer 1

AttentionedPlayer.movePlayer(); seems to be an intensive operation, and you execute it from within EDT (the GUI thread). Instead, execute it from within a new thread or a SwingWorker.

Read this answer to know more about SwingWorker.