large worksheet runs very slow on Excel for Mac

Hey we have a very large do***ent (10 worksheets of 1024 rows x 26
columns, with graphs,  roughly 11 MB) which opens very slowly on Excel
on the Mac.   Using the same do***ent on Excel for Windows doesn't
seem to have any problems.   Scrolling around the do***ent, selecting
cells, switching tabs, or just opening it causes Excel on the Mac to
slow down considerably.   It's just **very** pokey.   Is there
anything we can do about it?

Thanks.