Question Wqhd+ vs fhd+ ( huge performance issue ) (exynos)

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aj7400

Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    As soon as i try to shift to wqhd+ with 120 hz , the performance of the phone decreases alot , i see stutters here and there . The phone remains extra warm while using , even the typing isnt as smooth.

    But as soon as i switch to fhd+ , omg the phone is really fast again .. no stutters ,
    Phone remains very light warm , typing super snooth .

    Is there anyone facing the same issue ?
    ( reminds of my old s9plus with exynos where it was not able to handle wqhd resolution.)

    My point is , why do they even offer wqhd when the chipset is weak to handle ?

    Is there anyone facing the same thing ?
     
    I found WQHD to be smoother. Phone seemed less hesitant (for lack of a better word) in day to day interaction. For example, when set to FHD+, there would be a small delay after unlocking, before the screen starting accepting a touch input. Nothing lagged, but there was this feeling that the CPU/GPU was scaling up an FHD interface onto a WQHD screen (Number of pixels remain the same on the screen, whatever resolution you pick). Once i changed to native WQHD resolution, everything seemed to be instantaneous. It may be consuming more battery, I'm not sure - but i don't see a worse battery life than what it was on FHD+.
    During a CODM session I noticed that FHD+ gameplay was smoother than WQHD - so that's probably going to be my use case for FHD+ - Gaming. For everything else, I'll stick to WQHD for sometime and post my experience if I notice any downsides.
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    What i have noticed is , if you change the resolution from 1440 to 1080 .
    The phones data in certain apps still shows that phone is rendering 515 ppi

    A restart is must after changing resolution ..

    Try to reduce to 1080p , do a reboot , and then use the phone and see if there is a difference ..
     
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    So far, FHD+ seems to be easier on the battery. The touch delay has disappeared after a reboot, so thanks for that suggestion!

    Charged nearly a day ago, and did regular usage including half an hour of CODM, WhatsApp, XDA, reddit etc mostly on wifi. Auto dark mode (sunset to sunrise)

    With that kind of use case, I'm at 19+ hours since full charge, 4+ hours of screen on time and still have around half the battery left.

    I can live with that. 😀
     

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    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    So far, FHD+ seems to be easier on the battery. The touch delay has disappeared after a reboot, so thanks for that suggestion!

    Charged nearly a day ago, and did regular usage including half an hour of CODM, WhatsApp, XDA, reddit etc mostly on wifi. Auto dark mode (sunset to sunrise)

    With that kind of use case, I'm at 19+ hours since full charge, 4+ hours of screen on time and still have around half the battery left.

    I can live with that. 😀
    So thats the point .

    Qhd is good , but its not easy on cpu/gpu as well as battery .
    I am more concerned about the overall general performance , ( not gaming)
    Hows the overall performance as of now ?
    Like using whatsapp , insta ,facebook , typing , browsing , etc?

    Better/smoother than qhd? Or similer ?
     
    So thats the point .

    Qhd is good , but its not easy on cpu/gpu as well as battery .
    I am more concerned about the overall general performance , ( not gaming)
    Hows the overall performance as of now ?
    Like using whatsapp , insta ,facebook , typing , browsing , etc?

    Better/smoother than qhd? Or similer ?
    Honestly speaking, general performance seems no different between FHD and WQHD. I can't even tell which resolution I'm running unless I go to the resolution setting page.
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    Honestly speaking, general performance seems no different between FHD and WQHD. I can't even tell which resolution I'm running unless I go to the resolution setting page.
    Yes .. thats true .. its just after changing the setting . You realise that its different .

    After like 5 mins of using i barely notice the change in resolution .

    I dont know how you are able to achieve that type of battery ..

    I might have tinkered with a lot of setting , installed galaxy labs and good lock too .

    According to you should i get my phone restored ( software) once from the service centre ?
    Or will the factory reset be enough ?
     
    Yes .. thats true .. its just after changing the setting . You realise that its different .

    After like 5 mins of using i barely notice the change in resolution .

    I dont know how you are able to achieve that type of battery ..

    I might have tinkered with a lot of setting , installed galaxy labs and good lock too .

    According to you should i get my phone restored ( software) once from the service centre ?
    Or will the factory reset be enough ?
    I have good lock too, haven't used labs. I like to tinker with my phone as well. But I don't usually make changes outside what the OS allows (I've changed only user facing options, not dug into system disabling apps, or other such activity)

    Service center will not do anything more than what you will do at home. If you think you may have messed up too many settings and can't recover from it, just do a factory restore and set up again. But for the first week or so, expect poor battery life as the OS settles down. Coming from a OnePlus, I actually quite like Samsung software. It has a polish that OnePlus lacks, being built purely for Speed. It's quite robust, just make small incremental changes to set up to your liking, battery life will settle down to a comfortable level.

    My battery life was terrible when I got the phone a week ago, but has continued to get better with time.
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    I have good lock too, haven't used labs. I like to tinker with my phone as well. But I don't usually make changes outside what the OS allows (I've changed only user facing options, not dug into system disabling apps, or other such activity)

    Service center will not do anything more than what you will do at home. If you think you may have messed up too many settings and can't recover from it, just do a factory restore and set up again. But for the first week or so, expect poor battery life as the OS settles down. Coming from a OnePlus, I actually quite like Samsung software. It has a polish that OnePlus lacks, being built purely for Speed. It's quite robust, just make small incremental changes to set up to your liking, battery life will settle down to a comfortable level.

    My battery life was terrible when I got the phone a week ago, but has continued to get better with time.
    Do you think it could be an issue of bad os ?
    Will the restore from service centre make any difference ?
     
    Do you think it could be an issue of bad os ?
    Will the restore from service centre make any difference ?
    Honestly, I dont know. Only way to find out is to try. But once again, I don't think Service Centre people will do any special software flash that you cannot do with a factory reset at home. If I was you, i'd not give my phone to a stranger unless I couldn't manage or fix something myself first.

    BTW, what is your major gripe with your phone? Battery life? SOT? Standby? Performance? What is bugging you so much?
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    Honestly, I dont know. Only way to find out is to try. But once again, I don't think Service Centre people will do any special software flash that you cannot do with a factory reset at home. If I was you, i'd not give my phone to a stranger unless I couldn't manage or fix something myself first.

    BTW, what is your major gripe with your phone? Battery life? SOT? Standby? Performance? What is bugging you so much?
    Sot , battery . I could barely manage 5-6 hours sot without gaming .with Aod on fhd 120hz


    Using the camera makes the phone heat up alot and after using camera it throttles and even scrolling feels a bit laggy .

    Changing to wqhd and rebooting ,
    The ui feels less smooth , the response time reduces , apps like snapchat and instagram start stuttering .
     
    Sot , battery . I could barely manage 5-6 hours sot without gaming .with Aod on fhd 120hz


    Using the camera makes the phone heat up alot and after using camera it throttles and even scrolling feels a bit laggy .

    Changing to wqhd and rebooting ,
    The ui feels less smooth , the response time reduces , apps like snapchat and instagram start stuttering .
    That doesn't sound alright. Have you done a lot (i mean a LOT) of tinkering with the OS? If so, something might have gone off the rails and causing problems. Impossible for me to say. But the phone is buttery smooth... I don't think you should accept any lagginess. Most of the heating issues are also gone after the April update, so I'm not sure what has your device spooked. Which country are you from? Can you get an easy replacement or are you stuck with your device like in India? I'm not saying your device is faulty, but if its bugging you and you can get a free replacement without losing money, get it swapped with a new one.

    If that's not possible, the easiest way out will be a factory reset at home.

    I'd say go for it, wipe and set it up afresh.
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    That doesn't sound alright. Have you done a lot (i mean a LOT) of tinkering with the OS? If so, something might have gone off the rails and causing problems. Impossible for me to say. But the phone is buttery smooth... I don't think you should accept any lagginess. Most of the heating issues are also gone after the April update, so I'm not sure what has your device spooked. Which country are you from? Can you get an easy replacement or are you stuck with your device like in India? I'm not saying your device is faulty, but if its bugging you and you can get a free replacement without losing money, get it swapped with a new one.

    If that's not possible, the easiest way out will be a factory reset at home.

    I'd say go for it, wipe and set it up afresh.
    Unfortunately i am from india bro .

    Bought offline ,
    No replacement/return

    I know if i submit in the service centre they are gonna destroy my phone ( may be sratches / mishandling or they could open the phone and destroy the waterproofing)

    What i am planning is go to service centre and get the phone flashed again . ( i am least sure that it could be a bad os install on my phone )

    A factory reset is what i can try at the moment .
     
    Unfortunately i am from india bro .

    Bought offline ,
    No replacement/return

    I know if i submit in the service centre they are gonna destroy my phone ( may be sratches / mishandling or they could open the phone and destroy the waterproofing)

    What i am planning is go to service centre and get the phone flashed again . ( i am least sure that it could be a bad os install on my phone )

    A factory reset is what i can try at the moment .
    Best of luck! Do keep me posted. I really hope you get this sorted out.

    This is a very expensive heartache otherwise! I can imagine what you must be going through. Spend the Sunday setting up a freshly reset phone. If you start now, you should be done by night. Damn thing has soooooo many settings to navigate.
     

    aj7400

    Senior Member
  • May 25, 2013
    720
    190
    Samsung Galaxy S21 Ultra
    Best of luck! Do keep me posted. I really hope you get this sorted out.

    This is a very expensive heartache otherwise! I can imagine what you must be going through. Spend the Sunday setting up a freshly reset phone. If you start now, you should be done by night. Damn thing has soooooo many settings to navigate.
    While setting up , did u install the samsung apps?
    Are u signed in to samsung account?
     

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      What i have noticed is , if you change the resolution from 1440 to 1080 .
      The phones data in certain apps still shows that phone is rendering 515 ppi

      A restart is must after changing resolution ..

      Try to reduce to 1080p , do a reboot , and then use the phone and see if there is a difference ..
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