This page should not be necessary, but even the beta testers who have spent months with Easy CD Creator 5 have not been able fully to decipher its decisions to buffer data. If you are using a drive with underrun protection (e.g., BurnProof) and select that protection on each burn, buffering will never be invoked - even if it would have been a wise choice.
Soon after beginning to use the program, many will find that it seems capricious (or worse) when it burns from any source. It may decide to buffer the write without apparent reason. It may seek test files even if the drive has already passed system test. Even if writing only large files - or a single very large file - it will look for small ones; when looking for large files, it may seek some which are too large ever to write to a CD-R.
Part of the answer is that the test for whether this write should be buffered depends on a different mix of file sizes from those used for system test. Once we learned that, a 25 KB program, testfils.exe was written which creates an appropriate 64-MB mix of large and/or small files on your choice of drive. That mix will satisfy both tests - system and individual write. After testing is completed, you may delete its folder either manually or by running the program again.
Truth to tell, even with testfils.exe, I have not quite tamed the buffering, but it helps. I hope it does for you as well.
E-mail me at cdrecording@mrichter.com