Mattermost self hosted slow issue

[amy.blais]

Hi, would you be open to upgrading your server to a more recent version? We support server versions v7.1.0 and later. Please see these resources when upgrading:

• Prepare to upgrade Mattermost — Mattermost documentation
• Important Upgrade Notes — Mattermost documentation
• Mattermost self-hosted changelog — Mattermost documentation