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Full review of LG DualUp Square(ish) monitor

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javeryh:
I am still very interested but the price is too high.

DJO_Maverick:

--- Quote from: Justin on January 19, 2025, 01:02:27 pm ---Has anyone else purchased this monitor?  Im still very satisfied

--- End quote ---

I got one about a year ago now to replace a 27" CRT monitor after its grid shorted.  It took some soul searching (before giving up on cost-effectively replacing the CRT), and trying a couple of other more conventional LCDs first, but I could not be happier with the DualUp in my cab now.  Couple of additional observations I've made:

- On the obvious end, when rotated, it's about the closest match you're going to find to a 27" CRT footprint.
- While it's officially a 60hz monitor...  this monitor (or mine, at least) CAN sync to a range of frequencies and support VRR within it.  By using CRU and adding a Freesync block with a range of 45-61, then enabling VRR in AMD control panel, it is working stably at native resolution.  As long as desktop resolution is set to 61hz, and MAME resolution is set to 61hz, VRR has been working fine using mainline MAME.  I can't claim to have tried everything under the sun, but I've tested a fair number of odd rates (RType, MK, CPS1, DK), and all are syncing fine without using triple-buffering, V sync, etc. 
- It has a high enough resolution to do some very compelling CRT simulation with HLSL, too.

I was wondering why more people haven't discovered this one...  But if you need to use an LCD in a cab, it's great.

Justin:
Hey maverick, thanks for posting this.

That is exciting if the Monitor supports VRR.   I'm going to set up CRU and test it out this weekend. Any specific info or screenshots of CRU you can share please?  Exciting stuff.

Also what cable are you using and what card? VRR can be picky with the cable type etc and I'd like to know what has worked for you.

DJO_Maverick:
It was certainly the product of some experimentation over time.  Displayport method did not work for me.  I'm using a HDMI 2.1 cable, I couldn't tell you the brand offhand.  From a generic big box store.

Go to the Extensions section (button near bottom right).  You'll end up having to click to add a Freesync range block, then set it.  I'd recommend 47-61 actually.  45 was a bit arbitrary, and after testing a bit more, I do see some frame drops in 45-46.  62 causes noticeable drops on mine.  Save/apply and exit.


After that, go to AMD Display Settings and you should be able to enable VRR if the last step took.  I'm using an RX 6400 here.  Then you'll need to there create a custom resolution of the native res (2560x2880) at 61hz.

Next, go to Windows Display Settings, then Advanced Display Settings, then Display Adapter Properties to manually change the desktop refresh to 61hz.  Do not skip this step!  Calamity actually posted about this a while back, that VRR apparently has a tolerance range from the set target where it does not kick in.  Net effect is, if it's still set to 60hz, things close to 60 (CPS, for example) do not sync right.  I've seen that behavior on mine.  Lifting it to 61hz apparently 'tricks' VRR into turning on as intended at those between 59-60. 

At that point, you can go verify it's working with various freely available tools.  The scrolling bars VRR test on git, the pendulum test, Blurbusters frame drop test, whatever floats your boat.  Mine appears to be working spot on within the set range.

Last, tweak MAME ini as needed...  almost stock will do.  Turn lowlatency on (1), and make sure refreshspeed, syncrefresh, and waitvsync are all off (0).  And...  that's about it, should work fine.  Turn off filter and go nuts with HLSL.

Let me know how it turns out...  Excited to see someone else appreciating one of these, and hoping mine's not a fluke.

Justin:
Maverick I sent you a DM

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