Rife kinda killed it (for video interpolation)
I haven't tried it in over a month. If the issue is fixed where it takes so long to open a 4K file, then I would use it without hesitation.
But the loading issues always put me off.
EDIT:
OKAY WOW THE DIFFERENCE IS MASSIVE!
Even at double the FPS (48FPS) it looks better than anything else at 120FPS.
It is worth the loading time and seek loading time when forwarding and moving back. Artifacts are minimal too. And now I wish my RTX 3090 could push 3x or 4x the framerate haha!