Corel x8 slow to save slow to open

Trying to work on 45mg file

it takes 45 min to open and and hour to save. So far.

either that or file frozen

why is this occurring on x 8 haven’t had problems with earlier versions

this is driving me nuts

seriously thinking of ditching Corel as this is a work software that I rely on 

can anyone assist seeing the Corel support is next to useless in helping