Hi yellow.water,
I applaud you for struggling out of the golden cage.
Here there has been a similar situation, infrastructure wise, since my daughter exchanged her Android for an Apple a while back.
Performance issues are notoriously difficult to troubleshoot once open doors are closed.
- Did you check the logs serverside, for the same timestamps?
- How is Nextcloud accessed, are there proxies/VPNs/NAT in between?
- What is the performance/behaviour for other clients when uploading to Nextcloud?
- I understand the SMB share is on a NAS; does Nexctloud run on this NAS as well, or on another machine? How about the connection between NC and NAS?
Did you twice write down the specs for the VM, or is one for the VM and one for the host?
My Nextcloud runs on somewhat similar specs, in more detail:
- quad-threaded Pentium J5005 with 32 GB RAM
- running Proxmox
- Debian with Yunohost in a container (3-core CPU, 5 GB RAM)
- Nextcloud installed/managed via Yunohost, recently upgraded from NC29 to NC30
- Thin LVM storage assigned directly to the container
- Some 2.x TB in use, spread over some 30+ accounts
I am not aware of any trouble similar to yours during uploads, I’ll ask my daughter whether her phone displays any errors
edit to add: Which version of the Nextcloud app are you using on you phone? The Android version seems to be in rough water at the moment.