Windows 10: How to keep 240hz refresh rate on new monitor

This is my situation. I have a MSI Stealth GS77 gaming laptop with an HDMI 2.1 output that I have an external monitor connected to. The monitor is a 1440p Asus ROG PG279QM. The monitor has several HDMI 2.0 inputs and a DP 1.4 input. The monitor is capable of a 240hz refresh rate. Everything I have read says that a 240hz refresh rate is supported at 1440p over HDMI 2.1, but not HDMI 2.0. I currently have the monitor connected to the laptop using an HDMI 2.1 to DP 1.4 cable. I am currently getting the 240hz refresh rate. I was getting it the other day and updated the BIOS on the laptop a

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Can't change monitor refresh rate

I have just bought a new 240hz monitor and whenever I try to change its refresh rate to anything higher or lower it goes black screen and reverts back to 60hz.

 

Refresh rate Problem

Hi Robert,

Thank you for posting your query in Microsoft Community.

Screen refresh rate is the rate at which the data displayed on screen is refreshed; it may be an image or some text document. Most of the users would like to set it to a higher rate but this also depends on the capacity of graphic
card and monitors. If the refresh rate is slow, the images on the display looks as flickering to the user eye and makes it uncomfortable to work.

Nowadays the latest monitors available in market will have minimum 60 Hz of refresh rate and it is very good option to set it to 70 Hz if you your monitor is compatible. Normally a high performance or quality monitors can reach
120 Hz of refresh rate. So I would suggest you to set your monitor refresh rate as higher as possible, below given steps describes how to access this feature on your Windows 8.1/10 PC.

• The default refresh rate setting is 60 Hertz (HZ); however, your monitor may support a higher setting. Check your manufacturer's documentation for information about the settings that your monitor supports.
• If you use a higher refresh rate, you can reduce the rate that your screen flickers; however, if you specify a refresh rate that is too high for your monitor, your screen may become unusable and your hardware may be damaged.
• Changes to the refresh rate affect all users that log on to the computer.

I would, as of now, suggest you to visit the computer manufacturer's support website and install the latest display and chipset drivers available for the latest operating system (currently it would be 8.1 in the list).

Hope this information is helpful. Please feel free to reply in case you face any other issues with Windows in future.

 

Apps don´t allow 240Hz refresh rate

System is set to 240Hz every game is fine with it too, but I open shotcut or DaVinci resolve, or any installed program and it´s really laggy. I have high end PC it seems that
apps don´t allow the same refresh rate as I have on everything else. They seem to be stuck at 60. Chrome works in 240 perfectly, please can you help me ?