Fixing performance / CPU load issues

If you experience issues with CPU load close to 100% when running the product, try setting AllowThumbnail to false in data/settings/config.json file:

"AllowThumbnail": [
    false,
    "bool",
    null,
    "If disabled, image thumbnails will not be generated"
],

Generating previews for attachments is rather resource-consuming operation, so disabling those previews is the first troubleshooting step.