Export now takes longer

ive installed the new c12 update and i just did a short project when i clicked to export the audio it took ages…
too put in context i went too the toilet,made a cup of tea and a sandwich went back to my studio and it still hadnt finished !!!
the project wasnt very long and it wasnt finished nor did it have tons of plugins but took much longer than usual.

anyone else having this?im on windows 10