Custom Resolution Utility (CRU)

[Aidorin]

(12-14-2020 03:54 AM)ToastyX Wrote:  

(12-13-2020 05:05 PM)Aidorin Wrote:  Yes, I thought about it right after I put my post that it is impossible for this program to affect or change the TV software simply through the HDMI cable that connects PC and TV. It was a slightly absurd question.

So ... do you think it can serve to remove the motion blur that feature of Nvidia that supposedly "double the frames" when the range of the VRR is restricted to 90-120? Although I don't know exactly what custom VRR range I should use. Do you have a tutorial on how to do all this?

That depends on how the TV refreshes. The feature you are talking about is low frame rate compensation. If the range is 90-120, it can also do 45-60 by doubling the frames. Motion blur is caused by persistence of vision combined with sample and hold, which means the pixels stay lit the entire time. If the TV does sample and hold, then not doubling the frames won't affect motion blur because the second refresh is redundant anyway. If the TV uses black frame insertion (BFI), which blacks out the screen after every refresh to reduce motion blur, then doubling the frames causes a double image effect when following motion, so expanding the VRR range would help there. Doesn't the CX55 already have a VRR range of 40-120? According to the RTINGS review, it's capable of doing both methods, but BFI is disabled when VRR is enabled: https://www.rtings.com/tv/reviews/lg/cx-oled

Yes, the LG CX has a VRR range of 40-120. But, from what I have understood so far, what I should do is to reduce that range, not to 'expand' it (as you said). And yes, the LG CX also has a BFI system, but it reduces the brightness and image quality, and as you correctly said, the VRR cannot be used at the same time as the BFI.

What I thought that perhaps could be achieved with those ideas that come out in the Reddit post that I put and your CRU program, is that Nvidia's LFC maybe would do something similar to what the BFI does, and it would eliminate the motion blur but without loss of brightness and quality.

Well, it is a bit difficult to speculate about all this, because this are techniques that I do not quite understand how they work, so speculation is even more difficult. Perhaps it would be best to start testing and see the results, although I'm not sure where I should start. With a 90-120 range custom VRR?