Does having 'Display LUA Errors' enabled impact game performance in World of Warcraft?

Generally, simply enabling 'Display LUA Errors' has a negligible impact on game performance. The game only processes and displays an error when one actually occurs. However, if an addon is constantly throwing errors in a loop, the repeated generation and display of error pop-ups could potentially cause minor stuttering or responsiveness issues due to the constant interruption, but this is usually an extreme case rather than a common performance concern.