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Yes, I did.
Topaz 7.x with "Chronos fast" model seems to give best performace vs quality for Full HD 25 to 60 FPS conversion.
On my specs, it takes about 2x time of input video, with same output resolution.
Converting to native LCD FPS is primary benefit. Resolution is not so important because HW upscaling is doing good enough job, it makes processing time much slower and final file much larger.
Very user friendly, usually works out of the box, price is a bit higher but final quality is better.
It can do motion deblur, stabilization etc, which is more HW demanding (and out of reach for live playback on current high-end GPUs).

If I want to go for quality, Topaz is the way. Or preparing video so I can play it somewhere else without relevant GPU for SVP.
SVP can play on the fly, which I consider it's main benefit and best choice for overall usage.
So I use both.

I have noticed some remarks that those doing RIFE models are now interested in other stuff so not sure if we will see any newer RIFE models soon.
Perhaps I may be wrong.

There is other exiting stuff, kind of exploring future ways of enhancing videos.
Topaz released it's Starlight Mini model, which is diffusion model for video upscaling, locally rendered if you have relevant HW (HUGE GPU with a LOT of VRAM). It is kind of next level.
Those can keep even NVIDIA GPU Baseboard 4 H200 busy for a while, I guess.

Experimenting with ComfyUI.
A node-based application for generative AI is different aproach and video frame interpolation is only part of it.
It is open source, hence free and with all negatives of it - not working straight away, compatability issues with tons of modules, Python versions etc.
And usually painfully slow.

Found interesting paper called "A Survey on Future Frame Synthesis: Bridging Deterministic and Generative Approaches".

AC3Filter is an external aplication that works with MPC-HC.
https://www.ac3filter.net/download-ac3filter/
It gives you full control how audio should behave.

MPC-HC works great with Windows 11, even latest 24H2 for 10-bit input and output.
Key shortuts for moving picture and subtitles is a must for me.

Try ancient AC3Filter to mix audio channels and customize it for your preferences.
There is no one-size-fits-all and I use custom profiles for stereo (podcasts, sport, radio/music) and different for multi-channel.
This is to aviod that some content sounds and looks good and other is poor.

Hi there,

what is your current computer as a reference point?
MPC HC? MPV? Other?
Performance also depends on desired quality and type of movies (anime, sport, TV series).
Different types of movies and different RIFE models.

There are a lot of variables so I would not expect exact answer.

Personally, I started using SVP with MPC HC and MadVR to get good colors.
MadVR is quite demanding, even on AMD 7950X3D and RTX 4070 Super.
Once I changed from "regular" 4K LCD to high-end 10-bit HDR one, I got rid of MadVR and happy with MPC HC and it's internal rendered - super quality with 4K/HDR sources.
1920x1080 / 25FPS to 4K / 60 FPS, RIFE v2 25 or 26 playing live is doable.
Watching Formula 1 and Voleyball, both are fast moving scenes.

Just compared with Topaz.
With my settings, it takes about 10 times of movies duration to enhance from 25 FPS to 60 FPS with 10x larger file while retaining 1920x1080 resolution.
Basically, overnight job both for GPU and CPU to watch a 2-hours sport next day.
On the other hand, there are definitely less artifacts and I can easily upscale to 4K with passive mode on GPU when playing.
Also, seeking with pre-computed file is smooth.
So, viewer experience is much better...if oyu can wait and burn PC for 10 hours.

I will try to transcode using SVP before watching to get a comparation later...

Hi,

I would recommend to start reading about SVP.
There is a good Wiki site about How it Works and then specifically Re-encode video to high frame rate with SVPcode

Take a look at Application settings / Additional options / All settings.

There is a bunch of settings you can finetune.
It is the "fire_sc" property name you want to look for in Video profiles.
Note there may be more profiles so you need to match those.

Got EIZO CG series monitor today.
It gives me opportunity to use DisplayPort to passthough 4k/60Hz 10-bit HDR video to display (both madVR and MPC Video rendered).

This scenario also work: calibrated monitor using built-in device and EIZO ColorNavigator (PQ_DCI-P3), saved as ICC, converted to madVR 3DLut and is ready to use in madVR settings.

Both scenarios gives excelent quality.

Final result: MPC-HC + (madVR or MPC VR) + SVP to 4K/60Hz 10-bit HDR @ 60FPS from any video source.

I'm also using MadVR and MPC-HC.
MadVR with calibration BT.709 and HDR tone map using pixel shaders - it gives me good colors for 10bit source video.

I have EIZO CS2740. It is a great 4K LCD but has no 10-bit color passthough.
MPC Video renderer need to convert it to SD and it makes colors somehow washed out.
(without converting to SD, it's even worse).

MadVR solved my problem - it is preserving vivid colors and give me more control over output.

I haven't done any real HW calibration and making 3D LUT to use it with MadVR.

rife_v4.25_heavy works fine for me, both v1 and v2 versions, just like the other rife models - copy to folders, restart SVP and there you go.

I wasn't never able to run any non-RIFE models, but that's another story.