When working with large files via WebDAV, you may encounter errors during upload/download. These errors are controlled by Windows on each individual PC.
Windows defaults the limit of downloads to 50MB and uploads to less than 30 minutes. Users can adjust these settings to increase the size and/or timeout as needed.
These settings are outlined in the Microsoft Knowledge Base article linked below. Note there are two separate settings, one to handle uploads and the other to handle downloads. Additionally, while the link below refers specifically to Windows 7**, it applies equally to Windows 8+ and Windows 10.
** Microsoft support for Windows 7 ended January 14, 2020 and Kahua support ended simultaneously. Due to this change, Kahua System Requirements call for a minimum of Windows 8.1, with the recommended version of Windows 10. Customers currently using Windows 7 should make immediate plans to update their systems.