I've read this in the documentation several times trying to specifically understand the exact limitations:
"Core storage allows a maximum of 16Kb (16384 bytes) of encoded data to be stored. Any data exceeding this limit is not guaranteed to be stored and can potentially cause loss of stored data. Exceeding the limit will cause a warning to be displayed in the event log when in preview mode."
Per entry? (data.xyz, data.abc)
Sorry, there are many pretty vague explanations in the documentation, and it makes it hard to plan for certain things, if someone who knows for sure, or maybe even a manticore dev could clarify so I know exactly what I'm working with I would be infinitely grateful!