Animation FPS limited by framerate?

For example if I use a 60FPS animation and the game is running at 30FPS, does Unity skip frames or if I have code specific for each frame (like frames or physics) will they still get processed?

I am making a realistic game using swords and have noticed during quick sword slash animations the sword collider doesn't always get detected by the shield and it's clear to see in the animation viewer that the sword moves very quickly from frame to frame, so I was thinking about getting 90/120FPS animations done to improve the accuracy and wanted to check first whether this would be a viable method?