I've tried it on Windows OS 7 and 10, on OS X and on a Linux box. Worked with all browsers including IE in many versions, Safari, Chrome, Opera and Konqueror, on all platforms.
I don't know much ASP but I have seen these errors a long time ago on other forums and there were many ways to fix it server side (flush the buffer, use no buffer at all (longer load times) but when these errors showed up, they usually did for every user, not just a specific one. I'm at a loss and pass what was already suggested, nothing else comes to mind.
Would Mozilla Firefox act better on your specific setup I don't know, but have you tried it?