Adobe Premiere Pro Proxy glitch?

So I just proxied a bunch of 4K footage that was shot in 10bit 422 59.94 fps. I went to modify the clip to interpret it to 23.976 so they can all just playback in slow motion so I don’t have to slow down each individual clip on the timeline. Well when I do the proxy ends up playing back extremely choppy. I’m assuming when I went to make the proxies I was then supposed to tell it what frame rate to be interpreted as? Is there a work around to where I don’t have to remake proxies all over again? This is extremely frustrating and any help is much appreciated!