I'm writing a document containing many chemical reactions drawn with chemfig.
As I build it up, the compilation time is increasing unexpectedly fast and has reached nearly 1 minute for about 50 pages. It's not that much for a single compilation, but it sums up.
So, is there a way to reduce it?
Maybe a way to "store" the reactions and reuse them in the following compilation, like the svg package that requires the --shell-escape option only if the document contains an image that has not been converted yet?