I had to upgrade from office 2010 to office365 because of licensing issues. I run my entire trading operation on excel and Bloomberg addins. However, since the installation my excel spreadsheets have slowed down. Typically I have about 10 different spreadsheets open (some calculating risk, some run as screeners, some for pnl analysis). Nothing is computationally intense and everything ran smoothly on Office2010.
With Office365, once a spreadsheet is "active" it works fine. The problem is that when I maximize a spreadsheet, I can wait up to 2 minutes while my computer freezes. Once the computer unfreezes, it works fine until I maximize the next spreadsheet. If I wait 24 hours to reuse the spreadsheet (say for a screener), the 2 minute freeze happens again. It's almost as if the spreadsheet is being loaded into memory from a cache and then after some time of no use, the spreadsheet is taken out of that cache and put somewhere else until I request it again. Has anyone else seen this behavior?
And for what it's worth, I'm running Win7, Dell Precision T5810 with Xeon E5-1620 3.5Ghz with 16GB ram. I run each spreadsheet in its own instance of excel using the "/x" option. Looking at the Performance Information and Tools everything is at 6.0+ except Graphics which is at a 4.8.
I have a similar issue with Outlook365 too. I don't know if it's related.