Lossless Scaling

Lossless Scaling

Help With Multi Monitor Setups?
I like to play some strategy games with Lossless Scaling enabled, while listening to Audible on my second screen or watching YouTube. Unfortunately, the moment Lossless Scaling is turned on, it immediately freezes my second screen and audio even stops coming through. I'm not totally ignorant to the settings available so I've tried a number of things but thus far no dice. I noticed it works fine on my wife's second monitor which is technically a TV with a 60 hz refresh rate but not on my Asus VG2658 (primary monitor is an Asus VG278.) GPU is an RTX 3090. Wondering if anyone has a suggestion I have not tried thus far?

Attempted the following (if I say on/off it means I tried with setting toggled in either direction to test and observed no difference in performance):
* Turned Gysnc on/off on secondary monitor
* Turned Gsync on/off on primary monitor
* Different refresh rates on secondary monitor. Default is 165 hz but also tried 60 hz
* Running Lossless Scaling as admin or not makes no difference
* Lossess Scaling Settings:
* Different Frame Generation methods and modes, X2 X3 X4 LSFG 3 2.3 1.1 etc
* Performance Mode on/off
* Multi Display Mode on/off
* Windowed Mode on/off
* Gsync Support on/off
* Different Max frame latency settings from 1 frame latency to 5
* All different sync modes Default On Off etc.
* Scaling Modes both Aspect Ratio and Fullscreen

I'm starting to think there probably isn't a solution to this but I'm a bit flabbergasted at how since it works fine on my wife's setup. Tried a bunch of stuff, much of which probably wasn't even relevant to addressing the issue. Any ideas folks? Thanks in advance!
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Ethics 19 Feb @ 4:03pm 
Might not be a problem, more a case of capacity. Have you looked at your VRAM and utilisation of your GPU when using LS? Mine (3070TI) stutters watching videos on the second screen when VRAM is low (1-200MB) and utilisation is high (like 90-98% of the GPU) is used. Which is perfectly understandable; the card is being taxed heavily. so there's nothing left for the videos.

If that's the case then you could try dropping some of the settings in your game to have less GPU utilisation, i.e. balancing it across more things. If it's also Audible which has a low GPU usage then i would also look at your browser and see if it's using GPU acceleration which again, will tax the card more.
Originally posted by Ethics:
Might not be a problem, more a case of capacity. Have you looked at your VRAM and utilisation of your GPU when using LS? Mine (3070TI) stutters watching videos on the second screen when VRAM is low (1-200MB) and utilisation is high (like 90-98% of the GPU) is used. Which is perfectly understandable; the card is being taxed heavily. so there's nothing left for the videos.

If that's the case then you could try dropping some of the settings in your game to have less GPU utilisation, i.e. balancing it across more things. If it's also Audible which has a low GPU usage then i would also look at your browser and see if it's using GPU acceleration which again, will tax the card more.

Hey, thanks for your reply!

So, I completely forgot to add to my list that I'd tried "soft" tests with the aim of reducing system load, namely swapping to different games which are far less taxing on the system and seeing if this made any difference; admittedly I would usually only bother to use frame gen on a game that doesn't have great framerates anyways, so I don't see the app's performance on such games often. And of course some games that do have poor framerates are not actually taxing the GPU as much as one would expect, such as 32-bit games that seem to have VRAM usage limitations, my use case example would mainly be Rome 2 TW.

At any rate when I tested with less taxing games, I didn't notice any difference in performance, however I also did not bother to monitor my VRAM or anything and you're right, I'd best check.

At first glance I tried running a battle in Rome 2 that *should* be triggering the issue, yet somehow it is not triggering it today, and in tandem, my VRAM is staying under 80%, usually more like 60% utilization. I am very confused as to how I am not triggering the issue today, but I just logged on so perhaps I am missing something or not using my system like I normally would; I'll have to stress test a bit and see if I can reproduce the issue while monitoring.

Yeah the Audible thing is what really shocked me; in my head that really shouldn't be upsetting the GPU at all, but yeah I do in fact have GPU acceleration on, in fact I have it on in *all* of my browsers, so if that is the root cause it would also explain why I didn't have better luck on different web browsers. I'll give it a try!

Certainly some food for thought. I'll play with things a bit more over the next couple days and if I discover any firm root cause (or fail lol) I'll post here in case anyone happens to have the same issue someday! Cheers and thanks again!
Last edited by Lysander Of Sparta; 20 Feb @ 6:28am
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