Some PDFs load very slowly

[TomTasche]

Example document sent to support@opendocument.app today with subject "Erste Bank PDF slow"

[andiwand]

looks like fontforge is chewing hard on this one

I tried to see if this is somehow optional, but does not seem to be the case. ultimately this seems to be a limitation of pdf2htmlex + fontforge. I don't think this is easy to fix