Your incremental load may be wrong. Because, Recently i faced this issue due to increment load
My starting stage the file size is 2.5 GB. We are allocating to Access Point for that file. And scheduled in Server level using Dependency. Fortunately, After running reload in QMC file size got increased to 4.2 GB. And it took me right way around 2.5 Days and then we found the issue where Incremental load script. Can you check whether do you have incremental load in your work file
Life is so rich, and we need to respect to the life !!!