Excel for Mac Running Very slow

This worked brilliantly for me! Been having problems with my father-in-laws computer for ages... Thanks!

I tried the font method and rebuilding the cache, nothing helped. Then I tried running Win 10 on parallels and the Excel on Win 10 runs normally like it's on an independent machine. So what I'm thinking is Microsoft just don't want Office to run at full speed on Mac. After all, Office is like the #1 reason people would want to switch to a Mac or a Windows.

Well played Microsoft.

I was encountering the same problem this morning. Incredibly annoying. I followed the steps below to clean up the fonts, re-started the computer, and everything is back to normal. I did not have time to run disk utility, since I was working in a client location today and had to get back to work as soon as possible, with the least interruption. I will do that later.

But I can attest that cleaning up the fonts made all the difference. Now normal, and fast. Hope that this can work as well for you as it did for me.

Yep cleaning up the fonts worked, thank you

You're a hero! That solved my problem with excel too! Thanks a lot!

After installing macOS Sierra last week, Excel 2008 for Mac is now significantly slower - for example, there will often be a 2-3 second delay when I'm using arrow keys to change cells. Is anyone else experiencing similar problems? Ideas? (I haven't gone through the above solutions yet, but will dig into them soon.)

You might want to consider starting a new discussion. Since this one is a couple of years old, less people are likely to look at it. A new post would be much more visible. You can link to this one.

Try looking/posting here.

Microsoft Support – Office for Mac

Microsoft Support – Office for Mac (2)

Thanks! your solution solved my problem.. I turned off the Error Checking option (unticked the "turn on background error checking" and then it's as you say, runs as fast as it's Windows counterpart

I tried all the suggestions above without success; still very sluggish. I noticed that when I opened a new workbook, it seemed to be fine. It was only after opening an existing file that it became slow. I also noticed that when I clicked on "Open Recent", it was very slow to populate the list of files. So, I cleared the recent list and boom, fixed. No idea why but an easy thing to try nonetheless.

Try disabling user fonts! Open font book, go to user fonts, select all and right click disable..

Voila!

thanks a lot you very much it was really VERY helpfull.

How do you turn off Suticase Font Management?

I tried everything the blow suggested and nothing worked. However, I cleared all recent files from the <File < Open recent option and now Excel is running Ok.

I don't have any use fonts - not that I can recognize as such, nor do I see a folder named like that 😟