New to LFC in need of help

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DrivenCrazy
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Joined: 13 Jul 2024, 13:48

New to LFC in need of help

Post by DrivenCrazy » 27 Jul 2024, 01:25

I have motion smoothness issues in games, and I want to experiment around LFC which my new display has and is a new thing to me. I don't know if it's a good idea, but I know it's a part of my display that keeps activating while playing and I want to observe it's behavior and potentially come up with a solution or alternative method to my issues. I would love to get some hand-holding and "explain like im 5 years old" to know how I should approach it.

What I want to do?
I thought of 1) Disabling LFC temporarily/changing when it activates and 2) Increasing LFC range so it gets activated on a higher framerate
Is any of this possible?

My display is ASUS VG27AQL3A. Fast IPS, 180Hz, ELMB, ELMB+Sync, Variable Overdrive, G-Sync Compatible/FreeSync Premium. I have a NVIDIA GPU. I use G-Sync when playing games.

1) I don't know when it exactly activates but from my observation it looks like it kicks in when FPS fall below 54. When frame limiting, 54 and below shows over 90-100 FPS in the display frame graph. Above 55, it is exactly that number.

Can I change it and pump it up a little to let's say 60 FPS? Would that even be a good idea?

The games I currently play I aim for 60 FPS while pushing for the maximum graphic fidelity my mid range setup is capable of for that number. I have a lot of motion issues undiagnosed (with a thread ongoing), possibly due to the frametime variance and trying to reduce them or get rid of them completely. Whenever LFC activates under a 54 FPS cap, it seems (I didn't test it enough) to be way much smoother than playing without it. I don't get above 60 FPS (and even if I do get 60, or 100, or whatever else be it low or high settings I still have and notice motion issues), it fluctuates below it (which isn't exactly in my goal) if I don't sacrifice some quality (and I already did a little). I guess I would need to OC my CPU to get more from it, but that is out of topic.

2) As I said before, because FPS fluctuates depending on what is happening in the game, I think my LFC keeps activating and deactivating. My question is, can it cause microstutters or reduce smoothness because of how often my display switches numbers? I want to test it, if possible, by disabling it OR lowering when it activates (maybe 49 FPS, not 54)

I have CRU installed, but I don't know what steps I should take and also not mess anything in the proccess. I want to do a backup of the current settings, find the settings for my issue described above and keep changing them to observe the behavior.

I did some searching as I'm writing this, and I don't think you (or I can't) can edit the LFC directly, only VRR range. If I'm looking right, mine is 48-180. I can provide screenshots of my CRU.

Thanks.

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RealNC
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Re: New to LFC in need of help

Post by RealNC » 27 Jul 2024, 08:17

It might depend on the display, not sure. In the displays I used that support g-sync, LFC activating and deactivating is not causing any visible hiccups for me. There can however be some brightness fluctuation on VA and TN panels, but IPS is usually immune to that. I can see it on my TN (forced g-sync compatibility,) but my IPS (native g-sync module) was 100% free of any such artifacts.
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