Windows 10: Can't get HDR and 144hz refresh rate to work properly. I'm getting visual bugs and rainbow...

Hey everyone, I really need help with the following problem: I recently bought a LG Ultragear Monitor with 144hz capabilities. Today I tried to watch some HBO Max and it automatically switched into HDR mode and suddenly multiple coloured dots appeared on my screen. At first I thought that maybe it was because the HDMI cable that I've been using is old, so i switched it for a known-good cable HDMI 2.1., to be precise, but the same problem continued. Later I realized that these dots wouldn't appear if used a lesser refresh rate, even if HDR was turned on, but whenever I changed the refresh rat

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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.

 

Refresh rate

I always change my refresh rate of monitor to 60hz but everytime i start after shut down or sleep mode it automatically changes to 144hz .Please help. How to permanently change refresh rate to 60hz.

 

144Hz and 165Hz are no longer available on brand new monitor

I received an Acer Nitro RG241Y monitor (Full HD 65Hz) and tested it extensively this afternoon, and 144Hz was working just fine over HDMI from my laptop with an Intel Xe Graphics (core i5 11th gen) GPU. Then I moved the monitor to my bedroom desk and for some reason it's now limited to 120Hz, as 144 and 165 Hz are missing from Windows Settings and Intel control panel. I tested different cables (including the one that came with the monitor), both HDMI 2.0 inputs and nothing, it's capped at 120Hz now. I know 165Hz will usually only work over DisplayPort, but it was still supposed to show on the refresh rate list.

Any idea on what might have caused 144 and 165Hz to be AWOL after turning off the monitor and moving it to another room? Does anyone know how to get these refresh rates back? Is it a graphics driver or Windows bug? Here are screenshots where 1080p144Hz and 1080p165Hz are listed as supported modes on Intel graphics panel, but are missing from refresh rate dropdown list. Like I said, both rates were available earlier today and at least 144Hz was working.