Steam: taskbar menu lag

Problem:

When I access Steam's menu via the taskbar, after clicking on a menu (e.g. Friends, Settings, Exit Steam), there's a 15-20 secs delay before it would actually trigger the action. This behavior only appears when accessing the menu options via the taskbar. It works fine when accessing the menu via the tray icon in the notification area. Steam user Oracle experienced the same issue and captured this clip to demonstrate the issue.

Solution:

In my case, updating the AMD integrated graphic card driver resolved the issue.

1. download and install AMD Radeon software
2. retart pc
3. go to Device Manager (run devmgmt.msc)
4. go to Display adapters > AMD Radeon(TM) Graphics > Update Driver > Search automatically for driver
5. once it installed the latest driver, I opened Steam and the menu works as expected
   

Ref:

• Steam lag on open from Windows taskbar? :: Help and Tips 
• Steam extremely unresponsive from Windows 10 jump list and start menu :: Steam Client Beta 
• lag when opening steam games from task bar tray :: Help and Tips