Yup, same here...
Code:
07/23/19-16:55:25 DEBUG CreDocument: loading document...
07/23/19-17:00:04 DEBUG CreDocument: loading done.
07/23/19-17:00:04 DEBUG Hyphenation: updating for doc language it : English_US.pattern => Italian.pattern
07/23/19-17:00:04 DEBUG CreDocument: set hyphenation dictionary Italian.pattern
07/23/19-17:00:04 DEBUG CreDocument: set hyphenation left hyphen min 2
07/23/19-17:00:04 DEBUG CreDocument: set hyphenation right hyphen min 2
07/23/19-17:00:04 DEBUG CreDocument: set hyphenation trust soft hyphens 0
07/23/19-17:00:04 DEBUG CreDocument: rendering document...
CRE: document loaded, but styles re-init needed (possible epub with embedded fonts)
07/23/19-17:05:24 DEBUG CreDocument: rendering done.
Still requires just shy of 200MB of RAM, cache file is only slightly larger at 15MB.