At the top of the project, add a Run Script step with code like
Code:
Application.Options.RunProgramOutputWaitTimeout = 500
500 was the v7 default (changed to 5000 in v8.0). You can use a smaller value (say 50) for even faster response, but CPU usage will increase, so be careful about really small values. We will also change the default back to a smaller value. This generally only affects programs that rapidly generate large amounts of output.
Note: The default for this setting was changed to 200 in v8.1.