Jim,
in another thread you assumed it to be the Retina display .. very good guess, but ...
pls try to convince me about the following:
I have a macbook pro retina 8 GB.
I have spreadsheets with 3000 or 7000 entries and formulas.
Filters are active but critera set to "show all" ===>>> scrolls fine.
The choosing any of the filters and select a subset => scrolling get awful AND even NOT SCROLLING but eg entering a single character into a cell and move to next line.
TAKES 2 seconds.
==> same MacBook, VMWare Running, Using the retina display of course ;-) and doing the same with the same XSLX (XLSB did not solve the issue) under OLD XP and ... wonder ... it is quick in scrolling using ths XLSX via netsharing.
Result to me clearly is NOT the retina, but the programming of MS Code on Mac OS.
It must have to with handling of filtered subsets.
As you know, when filters are active, the whole dataset is kept in a shadow table and it must have to do sthng with that.
btw:
a.) i tried all suggested stuff with the fonts
b.) i had the same behaviour with a freshly setup Mac OS in this MBP retina.
c.) once logging off and logging on changed behaviour a little and for a short time => Memory consumption or sthng with libs in Memory
==> anyhow: filters set to "show all" and all scolls fine.
You can have my workbook if you want.
And to be pretty clear:
this really is a mess
Keen to see next tries to explain.
About my machine.
Excel 14.3.9
OSX 10.8.5
MBPR MTLion 8GB 2,3 GHz Core i7
SSD