Task bar unresponsive (7 seconds) when toggling from visible to auto-hide(using empty space middle click).

With the taskbar set to autohide, tooltips for taskbar items often end up, for a while, at the very bottom of the screen, once the taskbar has disappeared.

Do please keep up the good work.

When I got a lot of open programs, and the taskbar is so full that the icons/buttons have to be shrunk, the graphics on the icons begin to flicker when moving the mouse over them and some buttons start to be without an icon in general.

This doesn't happen while 7tt isn't running and the Win7-taskbar is set to not group.

7tt 4.2.7, Win7 64bit SP1

Example:

http://i.imgur.com/yds4qcC.png

Settings:

http://i.imgur.com/ZG9jq36.png

I've been using 7+ Taskbar Tweaker for a long time without any problems but recently I've been having the one I'm about to describe, it may have something to do with Office 2013. I use Excel quite a lot and constantly open and close  different worksheets. There are some which I always have open so I like to have them arranged in a specific sequence. When I was using Office 2010 I never had this problem but now from time to time grouped items will rearrange themselves. Unfortunately I can't spot when exactly it happens or whether I do something specific. I know the major change between Excel 2010 and 2013 which I like a lot is that Excel windows are now independent which solves all alt+tab problems among other things. Maybe this has something to do? I tried disabling grouping by Application ID and then the problem doesn't seem to occur but this doesn't work for me so I didn't test it for very long.