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FAQ: What does "Warning:2003 The IO node KEYBOARD is used in real-time Sequence" mean?
#1
The 'Is Real-Time' property forces the operating system prioritizes the experimental sequence above all other system tasks to ensure precise timing.

On older single-core Display PCs, this setting can monopolize the processor, potentially freezing mouse or keyboard inputs. This risk triggers the warning message.

However, this is not an issue on modern multi-core or hyper-threaded PCs, which can handle high-priority tasks and user input simultaneously. Therefore, you can safely ignore this warning on most modern computers.