ID 470900 - [B] Import/Photoshop: Transfers of files totalling 900Mb or more will hang for 55 minutes then fail when connected to the VPN

Problem summary
Importing files to Flix that total 900Mb or more will consistently hang for 55 minutes and then fail when connected to the VPN.

Customer reported version
Flix 6.3.4

Customer reported platform

Windows

Steps to reproduce

1) Connect to the VPN to successfully open connection to the Flix Server.

2) Import 3 panels that total 900Mb or more.

Expected behaviour
Panels should import within a time roughly consistent with the client's internet upload speed.

Actual behaviour

The import will be stuck for roughly 55 minutes.

The server delegated with the import will continuously report "heavy traffic" throughout this time.

After 55 minutes roughly, the Client finally gives an error.

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Further information

Import of 2 PSDs totalling 600Mb while connected to VPN:

- Worked 3/3 times

Import of 3 PSDs totalling 733Mb while connected to VPN:

- Worked the first time

- Froze on the two attempts that followed

Import of 3 PSDs totalling 900Mb while connected to VPN:

- Failed 3/3 times

Import of 3 PSDs totalling 900Mb on local network:

- Worked 3/3 times

Import of 4 PSDs totalling 976Mb on AWS Server in US West, from EU West, no VPN connected:

- Worked 3/3 times

Reproduced by support

This bug has been reproduced in:
6.3.6-2 - macOS 10.14 Client - CentOS 7 Server

6.3.1 - macOS 10.14 Client - CentOS 7 Server

Unable to reproduce bug in:

6.2.2

6.1.2

Earliest version tested
6.2.2 - This issue doesn't appear in this version and has regressed

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