Can not upload files from webdav interface

I have installed nextcloud 15 on ubuntu 18.04. I can upload files from the web interface the only problem is it gets stuck on processing files if it is a large file (more than 5 gigs) and the web page does not refresh. If i manually refresh the page it will show the new large file upload.

Item 2 - When using webdav as a mapped drive i can not upload files as the file tries to upload and then restarts from the beginning, after doing that a few times i get an error.

Nextcloud 15, running on Ubuntu 18.04. Using windows 10 for access from webdav.
Any help would be appreciated -