On Swiss re cloud bundle several investigations have been opened due to unplanned downtimes of author instance. The result of some investigations conclude that the last action before crashing the instance was the processing of the image. For example:

Here a sample of a large picture: https://author-live-swissre-webpresence.de.magnolia-cloud.com/.magnolia/admincentral#app:assets:detail;/images/institute/about-us/11_SRI_symposium_emea_istock_637213452.jpg:edit 

7360px (31MB)

When opening several images with that weight on assets app, is concluded that the instance run out of memory

Related tickets:

Big assets can't be displayed: https://jira.magnolia-cms.com/browse/SRE-306 

Imaging issue: https://jira.magnolia-cms.com/browse/SRE-307

Initial investigations: https://jira.magnolia-cms.com/browse/CLOUDHELP-107