The dump shows of course just the material that was processed when the time-out time was reached.
Run this material number alone and you will see it is finished in a few seconds.
MC46 computes material documents based on the given number of days in the selection screen. No matter if a material has stock today or if you have a warehouse management module in your infrastructure.
How many entries does your MSEG table have?
How many have to be read for your selection?
After what time do you get the time out?