It can be good On the image above 1 fps "video" is converted to 2.5 Hz "screen".
For the FI algorithm there's NO difference between rendering frame "135 and 1/2" right in the middle of frames 135 and 136 OR frame "135 and 431/1571"

Let me try to explain again what I mean:
A Blu-Ray movie runs at 23,976fps. To display this the best way on a display without the use of SVP you would need to feed your display device with 23.976Hz, 47.952Hz or 71.928Hz correct?
When using SVP the best option is to double the frame rate right? (or of course choose to screen refresh rate when a display device supports 47.952Hz which is then the same as double frame rate I think?) So what if a display device, like my JVC projector, DOES NOT support 47.952Hz or 71.928Hz, but only supports 23.976Hz. Then I will have to use a Hz that is supported by my display device and that is 50, 59 or 60Hz. But this IS NOT a multiple of 23.976 so this can t be good right?

Please help me understand, what am I missing? Or am I correct with what I say here?

btw: I just bought a i7 2600k (only for SVP! )

Lets say we've got 1 fps video - 1 frame each second. With 5/2 frame interpolation the output'll be 2.5 fps:
1st frame - at time 0, 2nd - 0.4 second, 3rd - 0.8 second, 4th - 1.2 sec, 5th - 1.6 sec an so on.

Imagine that red circle is an object moving from left to right.

In the interpolated frame sequence this object will be at positions of the black dot.

I don't understand you because you say "Tearing works fine without stops" and next "I m not getting is the frequencies that I m 'upscaling' to". It is contradiction. Show me the screenshot when you not getting the frequency needed?

Best choice for 23.976 fps is multiple refresh rate. In your case when choose from 50 Hz and 59 Hz and 60 Hz I'd select 59 Hz (59.94). It has minimal denominator (2) in smooth coefficient (5:2).

Because we both not speak in our native languages things are passing each other here 
What I m trying to say is that a movie is 23,976 fps and that one have to play this on 23.976, 47.952 or 71.928Hz right? If I set SVP to 'to screen refresh rate' and my screen is on 59,94 this is not a double or tripple of 23.976 so how can this work out good? It seems like it does (because I have no tearing and dropped frames) but how is this going good? I don t understand because it does not make sense. Are you understanding now what I mean?

One more thing:
I want to give ReClock a try. I need the spdif optical core DD/DTS signal. Will I be able to make ReClock work?

Best choice for 23.976 fps is multiple refresh rate. In your case when choose from 50 Hz and 59 Hz and 60 Hz I'd select 59 Hz (59.94). It has minimal denominator (2) in smooth coefficient (5:2).

Give me an example. I don't understand you without any numbers and screenshots.

I think you don t understand what I m trying to say here (wish I could speak Russian:)). What I m saying is that 23,976 material needs to be played at 23,976 or a multiple of this correct? My projector does not support 47,952Hz or 71,928Hz. It only support 23,976, 50 and 60Hz (and everything that s close to them). So how can it be going right when choosing 50 or 60 Hz on my display device (so NVIDIA as 1080p50 or 1080p59 (or 60)?

btw. Did you already test SVP with the latest NVIDIA driver that was just released and see performance improvements or decresement?

I don t get is that my movies run at 23,976fps and I m 'upgrading' this to 50. How could this be ok?
If smooth coefficient is not integer. It is fractional. See detailed info from SVP menu.

My LCD-monitor is the same: 50Hz works fine, 48Hz does not. You can try 72Hz mode for video 24fps x 3.

72Hz is not supported by my projector. Only 24, 50 and 60 (and everything that s close to them) is supported.

Tearing works fine without stops and smooth

But the thing I m not getting is the frequencies that I m 'upscaling' to. I m now playing with 1080p50 NVIDIA profile. ''Fresh'' and ''MonfreqD3D'' both has the same value (49,95) so this seems fine.
I also get no dropped frames during a movie reported by madVR. The only thing I don t get is that my movies run at 23,976fps and I m 'upgrading' this to 50. How could this be ok? I thought that it ALWAYS has to be a double, tripple etc. to ensure smooth playback?

too many artifacts
Does tearing test works fine at your projector? Vertical line must be moving smoothly without stops.
If not then you need to obtain video sync with your screen.

Use 1M mode.

just founnd out that 50hz works on my projector (47,952/48 does not). Can I use 50Hz as output for NVIDIA and use 'to screen feresh rate' for all content inclusinf 23,976 movies?
@Noweol: 24=>60 1M ust gives me too many artifacts while 24=>60 2M is not smooth engh for me
This is why I thought to use 'to screen refresh rate' with 190x1080@50 as output profile for NVIDIA as 'compromise'.