Excel takes a long time to redraw all the cells when the worksheet is scrolled. There are no formulas to recalculate, just a few hundred rows of data with text values. So, it is not spending time doing math.
I have disabled TaskOffload in the registry (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters)
All other applications seem to be displaying fine. Even videos are showing correctly inside the browser.
For now, both the server and the client are on the same gigabit switch. So, this is not a connectivity issue.
Also, this is a brand new installation of Windows Server, Remote Desktop Services (no Gateway) and Office 2010.
It feels like it is sending an update to the client after updating every cell, instead of simply updating everything and letting the OS manage the remote 'picture'.
I have looked for a while in various forums, and have not found anything else. Any help would be greatly appreciated.