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Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-09-24, 7:01 AM

I have a thinkpad X1 type 20MF and when I used my external monitor it's so slow that I have the feeling that my entire brain is slowed down.

I'm up to date according to Lenovo Vantage.


I'm using it at work. I do not play games on it. I observe the slow refresh rate problem with only the file explorer window, or firefox. I tried with both a Full HD and 4K resolution. It's the same.

I'm using the dock (USB-C dock). If I connect the external display without the dock I still face the issue.


EDIT: I've observed that the issue is happening only if I display on external screen only. If I duplicate the content on both screens, or if I extend the desktop to the screen 2 it's fine.


I'm really considering returning it.


Moderator edit: Added detail to Subject.



Solved! See the solution

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Re: Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-09-25, 7:28 AM

Hi RawBean,


Some of us did encounter similar issues with external displays and had to disable/enable the UHD 630 display adaptor for the X1E to work properly.

The Lenovo updates did not solve the issue.



Perhaps you want to test it out if it works for you?




0 person found this solution to be helpful.

This helped me too


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Re: Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-10-01, 7:08 AM






there is a workaround for this, see killing DWM process and creating shortcut for it


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