Quote from Bob111:
ok..just tried that..see it yourself :
You just did 100 per second or more. I never even wanted to try that because the data feed itself would not be reliable. The most i tried is 5 per second. Also, the IB docs don't say there is a time limit, but there you found it - it's 100 per second apparently. Good job. Now try it at a lower rate and see how it works.