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LG 45″ OLED Ultrawide 5120 x 2160@165Hz 45GX990A and 45GX950A

This seem strange as 330 hz is only supported up to 2560 × 1080 according to LG. Are you using scaling?
I just set a custom resolution in nvidia control panel then go in game and set the resolution and refresh rate.
 
I just set a custom resolution in nvidia control panel then go in game and set the resolution and refresh rate.
Interesting. Please post a screen shot from the monitors OSD confirming the resolution and refresh rate (I assume there exist such an option in the OSD). Thanks.
 

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And the photo of the monitors OSD confirming the actual signal received by the monitor?
it still says 2560x1080 in actual signal but in game it looks better.
 

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it still says 2560x1080 in actual signal but in game it looks better.
And the reason is simple - it is a 2560x1080 signal that has been "upscaled". Glad we got that sorted, thanks.

Edit: To be fair, you are far from the first person making this mistake. It used to be in the form of "OMG, my QHD monitor can do 4K!" or something like that :)
 
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Pretty disappointing if the scaling options don't seem to work properly. I expected they would integer scale nicely.

I've always felt that being able to do custom resolution on the PC is a much better alternative than these built in ones.

Also having to rely on DSC tend to limit scaling options in general from my experience, something that probably would not have been needed with actual DP2.1. This isn't a problem specific to this monitor though.
 
I've always felt that being able to do custom resolution on the PC is a much better alternative than these built in ones.

Also having to rely on DSC tend to limit scaling options in general from my experience, something that probably would not have been needed with actual DP2.1. This isn't a problem specific to this monitor though.
The DSC custom resolution issues seem to be pretty Nvidia specific issues afaik, don't know if AMD has the same problems. Still, a big pain in the ass.

Not sure if you could get any sensible scaling options working with the 2560x1080 dual mode either, and with 5K2K you'd be limited to 165 Hz even if you run a smaller resolution with no scaling because the GPU is still sending 5K2K to the monitor.
 
Run it at 120 or 144 Hz. That should put it under DSC requirements.
I don't believe that disables DSC sadly, the only way would be to use the "DP 1.2 compatibility mode" in the menu, but that severely restricts res/refresh rate. It's discussed in the TFTCentral review above
 
I don't believe that disables DSC sadly, the only way would be to use the "DP 1.2 compatibility mode" in the menu, but that severely restricts res/refresh rate. It's discussed in the TFTCentral review above
From what I've seen on other monitors yeah, if there is no DSC toggle in the monitor you are stuck with it even if you lower the res and refresh rate. You still get the slow mode changes, alt tab out of full screen, slow startup etc.
 
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I don't believe that disables DSC sadly, the only way would be to use the "DP 1.2 compatibility mode" in the menu, but that severely restricts res/refresh rate. It's discussed in the TFTCentral review above
Where is that even set? I am connecting it to a MacBook Pro via TB4/5 (USB-C for power and Video)
 
Where is that even set? I am connecting it to a MacBook Pro via TB4/5 (USB-C for power and Video)
Think it's in the bottom section of the menu, although not sure if it will apply for USB-C connection or not. have a look at the LG user manual, I'm sure it will cover it in there
 
So I picked this monitor up today and as soon as I changed the bit color from 8 to anything higher I lost signal with the DP. Can't figure out how to get that back so running with a HDMI cable at 165hz with HDR enabled.
 
So I picked this monitor up today and as soon as I changed the bit color from 8 to anything higher I lost signal with the DP. Can't figure out how to get that back so running with a HDMI cable at 165hz with HDR enabled.
Try dropping the DP version compatibility for that input, it may force windows to reset to defaults
 
Try dropping the DP version compatibility for that input, it may force windows to reset to defaults
Thank you. Turns out rolling back to a previous Nvidia driver resolved the issue. First time I've had any problems with the newer drivers on my 5090 so far.
 
So I have come across another strange issue. One I haven't run into before, so I thought I'd bounce it off you guys. So monitor is running on DP 1.4, but now Firefox(among other browsers) keeps crashing. I have update all drivers to the latest available for each piece of hardware. The issue started with Youtube where it acts like it just keeps trying to load the video, but this has happened just in general browsing as well. I did get some stability using HDMI, but it wanted to play sound through the monitors speakers which are lackluster. I have made sure my onboard motherboard sound is set to default as well. Any ideas? Everything worked fine before switching monitors.
 
So I have come across another strange issue. One I haven't run into before, so I thought I'd bounce it off you guys. So monitor is running on DP 1.4, but now Firefox(among other browsers) keeps crashing. I have update all drivers to the latest available for each piece of hardware. The issue started with Youtube where it acts like it just keeps trying to load the video, but this has happened just in general browsing as well. I did get some stability using HDMI, but it wanted to play sound through the monitors speakers which are lackluster. I have made sure my onboard motherboard sound is set to default as well. Any ideas? Everything worked fine before switching monitors.
I would suspect the issue is still with NV. have you tried a clean driver install?
 
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I would suspect the issue is still with NV. have you tried a clean driver install?
Thanks and yes. I ran DDU and even updated my bios. I decided to just use the monitor speakers as that is the only way I could get the browser to stop crashing. Even made Windows 11 sluggish at times.
 
From what I've seen on other monitors yeah, if there is no DSC toggle in the monitor you are stuck with it even if you lower the res and refresh rate. You still get the slow mode changes, alt tab out of full screen, slow startup etc.
That's not my experience. For example on my Samsung G70A 4K 144 Hz, if I lower the refresh rate or limit it from the OSD, the Nvidia DSR options become available. So this might depend heavily on the monitor model.

Slow startup and resolution changes are not a DSC issue but a monitor issue. Most modern monitors suck in this regard because it's not a priority for display manufacturers to improve.
 
Watched the TFTCentral review, and for HDR performance it's not that impressive.

It's basically the same as my old LG CX 48" for 10% window, and about 100 nits better for 50% and 100%. This is probably just fine at monitor viewing distance, but a far cry from mini-LED which can have 2-3x the brighness at those larger window sizes, obviously with its own caveats.

I still love OLED for TVs, but don't feel too bad about going with the Samsung 57" superultrawide instead of waiting for this one. Especially since I use MacOS and this would max out at 3840x1620 HiDPI scaling. Which is a good size on the Samsung but would likely be larger than I'd like at 45".

The 39" models rumored to be next in pipeline will probably be the nicer product if they can match the performance of this one.
 
Watched the TFTCentral review, and for HDR performance it's not that impressive.

It's basically the same as my old LG CX 48" for 10% window, and about 100 nits better for 50% and 100%. This is probably just fine at monitor viewing distance, but a far cry from mini-LED which can have 2-3x the brighness at those larger window sizes, obviously with its own caveats.

I still love OLED for TVs, but don't feel too bad about going with the Samsung 57" superultrawide instead of waiting for this one. Especially since I use MacOS and this would max out at 3840x1620 HiDPI scaling. Which is a good size on the Samsung but would likely be larger than I'd like at 45".

The 39" models rumored to be next in pipeline will probably be the nicer product if they can match the performance of this one.

I can get away with just 125% scaling on this one, while I need 150% on the Samsung. This means that I get almost as much information on the screen overall, but with more vertical than horizontal when compared to the Samsung. This is welcome because I find the Samsung to be too wide and not as tall as it could be.

The lower PPI is somewhat noticeable, though, and the eye strain is a bit higher.
 
I can get away with just 125% scaling on this one, while I need 150% on the Samsung. This means that I get almost as much information on the screen overall, but with more vertical than horizontal when compared to the Samsung. This is welcome because I find the Samsung to be too wide and not as tall as it could be.

The lower PPI is somewhat noticeable, though, and the eye strain is a bit higher.
As a MacOS user, the problem is mostly with Macs. Unlike Windows, the best you can do is 3840x1620 HiDPI, which is about 133% scaling. You cannot have any smaller scaling levels, the next step up is the full 5120x2160 native res.

I have no problems with that scaling on the Samsung, but I think it would be a bit big on the LG and 125% would be nicer. Unfortunately unless Apple gets their heads out of their ass, this is unlikely to get fixed anytime soon.
 
That's not my experience. For example on my Samsung G70A 4K 144 Hz, if I lower the refresh rate or limit it from the OSD, the Nvidia DSR options become available. So this might depend heavily on the monitor model.

Slow startup and resolution changes are not a DSC issue but a monitor issue. Most modern monitors suck in this regard because it's not a priority for display manufacturers to improve.
The slow startup/mode switching goes away when I toggle DSC off. And DSR appears.

It's a MSI QD-OLED in my case. With DSC on, I cannot even see the BIOS because it boots to Windows so fast, with DSC off I can see the BIOS logo just fine.

This is with DP1.4 at least, I didn't bother with HDMI since that port is used by the LG CX.
 
Watched the TFTCentral review, and for HDR performance it's not that impressive.

It's basically the same as my old LG CX 48" for 10% window, and about 100 nits better for 50% and 100%. This is probably just fine at monitor viewing distance, but a far cry from mini-LED which can have 2-3x the brighness at those larger window sizes, obviously with its own caveats.

I still love OLED for TVs, but don't feel too bad about going with the Samsung 57" superultrawide instead of waiting for this one. Especially since I use MacOS and this would max out at 3840x1620 HiDPI scaling. Which is a good size on the Samsung but would likely be larger than I'd like at 45".

The 39" models rumored to be next in pipeline will probably be the nicer product if they can match the performance of this one.

This has been the story for all OLED monitors to date. If you want the best HDR experience from an OLED then you have to get a TV. But it's not like mini LED monitors have very impressive HDR either by today's standards. No mini LED monitor is doing the kind of brightness figures that the LG G5 or Samsung S95F is putting.
 
I can get away with just 125% scaling on this one, while I need 150% on the Samsung. This means that I get almost as much information on the screen overall, but with more vertical than horizontal when compared to the Samsung. This is welcome because I find the Samsung to be too wide and not as tall as it could be.

The lower PPI is somewhat noticeable, though, and the eye strain is a bit higher.
Couldn't you just move the G9 closer as it can do the same resolution as the LG?
 
Couldn't you just move the G9 closer as it can do the same resolution as the LG?

No, because the width becomes even more of a problem if you sit closer, so you have to turn your head more, and look at the edges of the screen at a sharper angle. Also, I need to keep the monitor within the distance range that works well with my eyes and glasses. Neither too close nor too far are good. I don't have an issue seeing well the center as well as the edges on the LG. This is because it's not too wide, and it has a good curvature radius. The edges on the Samsung are too far, and the angle of view for the edges is a bit too sharp.
 
No, because the width becomes even more of a problem if you sit closer, so you have to turn your head more, and look at the edges of the screen at a sharper angle. Also, I need to keep the monitor within the distance range that works well with my eyes and glasses. Neither too close nor too far are good. I don't have an issue seeing well the center as well as the edges on the LG. This is because it's not too wide, and it has a good curvature radius. The edges on the Samsung are too far, and the angle of view for the edges is a bit too sharp.
Please note, "at the same resolution" as the G9 can do the 5k2k as well.
 
I think I’ll be returning mine soon. Just too many headaches to have with a new monitor and video card. My previous gen LG 45” looks great and zero issues. I know a lot if not all issues come back to Nvidia’s drivers.
 
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