Windows 10: Windows slow until laptop redocked to docking station

So I have a Dell Latitude E6520 which has a Intel Core i7 2760QM (Sandy Bridge) at 2,4 GHz. Even for todays standard, this is pretty good regarding speed.


The problem I have is that Windows is slow - this happens most of the time, but not always - until I redock the laptop in its docking station. The symptoms of the slowness are that Edge doesn't start instantaneous but needs a second or two, when I right click an icon in the taskbar for the first time the jump list needs a few seconds to appear and the animation is not smooth at all. The entire hardware appears not to work at the full speed possible. This is also noticable when using development tools such as Visual Studio or simply browsing the internet.


After I undock the laptop, then redock the laptop, everything gets smooth and fast like I used to have it.


Attached to standard Dell docking station:

- One monitor (DVI)

- One DVD-RW drive (USB)

- Keyboard (USB)

- 1x gigabit Ethernet

- Power

- Audio (3.5mm)

- Serial cable to my NAS


The laptop itself has the following storage:

- Samsung 830 SSD

- Seagate SSD/HDD hybrid


This issue started occurring in Windows 10, I think from 1709 forwards but it might be earlier. I never experienced this with Windows 7, 8 and 8.1.


Can anyone explain what happens here, why it happens and what might resolve this issue?

:)

 

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