25 FPS default to 50 Hz instead of 75 (OLED)

Submitted ⁨⁨1⁩ ⁨year⁩ ago⁩ by ⁨TheHobbyist@lemmy.zip⁩ to ⁨steamdeck@sopuli.xyz⁩

I was exploring the fps and refresh rate slider and I realized that when setting the framerate limiter to 25, the refresh rate was incorrectly set to 50Hz on the OLED version, when the 75 Hz setting would be a more appropriate setting, for the same reason 30 fps is at 90 Hz and not 60 Hz. Anyone else seeing the same behavior? Is there an explanation I’m missing here?

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Cralder@feddit.nu ⁨1⁩ ⁨year⁩ ago
50hz draws less battery so my guess is that they assume players who cap their frame rate at 25 are in need of battery life over low latency, because why else would you cap it that low?

Idk but that’s what I would do

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- TheHobbyist@lemmy.zip ⁨1⁩ ⁨year⁩ ago
  Where did you see it draw less? And by how much? Computing 50 frames per second does draw less than computing 75, but a display to render at 50 or 75, I have not seen anything with respect to consumption, so I’m curious.
  
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  - Cralder@feddit.nu ⁨1⁩ ⁨year⁩ ago
    I have just heard it mentioned in regards to both the steam deck and smartphones with high refresh rates. I don’t know by how much the battery is affected but I know that lower refresh rate draws less. That why smartphones have variable refresh rate and lower their refresh rate to like 1hz when nothing is happening on screen. You can Google it if you want more info
    
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deadcade@lemmy.deadca.de ⁨1⁩ ⁨year⁩ ago
What difference does it make updating the screen 75 times per second if you’re only getting 25 different images per second? The OLED screen (iirc) doesn’t visually change during every screen refresh (if the displayed frame is the same). Limiting to 25/50/75hz would have zero visual difference at 25fps, but would draw more power at higher refresh rates.

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- Tau@sopuli.xyz ⁨1⁩ ⁨year⁩ ago
  If the screen updates 75 times the game doesn’t have to wait so long between vblanks so new frames are delivered quicker and input latency is reduced
  
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heartsofwar@lemmy.world ⁨1⁩ ⁨year⁩ ago
The Steam Deck doesn’t have a true variable refresh rate capable screen; therefore, it only supports certain refresh rates, usually high 40s, 50 Hz, 60 Hz, or 90 Hz (OLED). Because of this, you simply can not do 25 FPS @ 75 Hz.

As to why you can’t do 30 FPS at 60Hz, my guess is Valve is prioritizing lower input latency due to increased refresh rate

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- TheHobbyist@lemmy.zip ⁨1⁩ ⁨year⁩ ago
  This is not about VRR. I am talking fixed refresh rates.
  
  This is entirely possible because the display can perform at any refresh rate between 40 and 90. As to why 75 over 50, your second paragraph answers that.
  
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- JohnEdwa@sopuli.xyz ⁨1⁩ ⁨year⁩ ago
  The LCD screen can run anywhere from 20hz to 70hz, it just starts getting more and more flickery below 35ish and the panel isn’t rated to run over 60 which is why Valve limited it to 40-60.
  
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Tau@sopuli.xyz ⁨1⁩ ⁨year⁩ ago
You can go to the developer settings and use the old frame limiter so you can set the refresh rate and frame limiter settings separately to work around the issue, i think

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helenslunch@feddit.nl ⁨1⁩ ⁨year⁩ ago
This is not “incorrect”, this is working as intended. It’s called frame doubling. There’s a toggle somewhere in the settings to separate them again.

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- TheHobbyist@lemmy.zip ⁨1⁩ ⁨year⁩ ago
  30 fps defaults to 90 hz, where is the default frame doubling in that case?
  
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  - Grass@sh.itjust.works ⁨1⁩ ⁨year⁩ ago
    Tripling?
    
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- vividspecter@lemm.ee ⁨1⁩ ⁨year⁩ ago
  It’s frame multiplication rather than doubling per se (even if the name says otherwise).
  
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Fubarberry@sopuli.xyz ⁨1⁩ ⁨year⁩ ago
As Tau said, you can change a setting in the developer settings and it will give you separate fps cap and screen frequency sliders. That way you can set it to 25fps and 75hz, or even compare 50hz vs 75hz and see if there’s any improvement.

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