Premiere playback issues with ProRes Proxies

Hi Paul,
I just wanted to add to the chorus of the interpret footage route, because my case seems to be pretty close to yours.
My case was as follows:

• DJI Footage with crazy FPS like 59.85 or 59.96 with proxies stuttering
• iPhone Footage with crazy FPS like 30.01 or 29.9797 with proxies stuttering
• Screen capture with crazy FPS like 39.91 with proxies stuttering
• A7S Footage with consistent FPS from camera setup with proxies working fine
  
  

When making proxies as ProRes Proxy, the encoder chooses the closest industry-standard FPS to encode the file. for instance, when the original is 59.85, the proxy automatically is made as 59.94, or originals at 30.01 the proxies are made at 30.

What I did was to batch interpret all those crazy FPS footage into the closest industry-standard possible (usually following what the proxy is). For instance, my 59.85 and my 59.96 became 59.94(industry standard).

Usually the proxy automatically selects a good standard, so what I did was to interpret everything to the proxies' FPS and all started to work fine. I'd encourage people to stick with intraframe codecs(like prores) instead of interframe(like h264).

Hi! Thanks for taking the time to write that out. I'm not using Variable Refresh Rate footage when I'm having these issues. It's standard 23.98 4K footage from a DJI Mavic 2 Pro. The original files played back pretty well, but I would get some lag when jogging through the footage so I wanted to increase editing performance by making proxies. Unfortunetly, the ProRes medium proxies would stutter and lag until eventually the footage wouldn't even play. My system can definitely handle the footage and the proxies played totally fine outside of premiere. There's definitely an issue with premiere playing back ProRes proxies made from certain sources. I have other footage from a Sony A7 that I made proxies from and they work totally fine.

The only workaround was to make h264 proxies instead just for the drone footage.

Hi! First time replying here so forgive me if I get the format wrong but I think I found a fix!
So I was having the SAME ISSUE and went all over the internet to try to fix it and I I final found something that worked. 
My original footage has Variable Refresh Rate (I guess cause it was gaming footage from OBS)
And I believe the proxy you make does not have VRR, so it creates that stutter/lag experience. 
You can check if your source footage has VRR by going to the file in the project bin, then right click, then look at properties and it will say "Variable Refresh Rate Detected" under the Video Codec Type. 
The Solution is to do to that same clip in the project bin, right click, select modify -> interpret footage -> Assume frame rate of "x" (whatever you want it to be) 
My previous setting was on "Use Frame Rate from File", and that was 60.0002 instead of 60.00 and I guess that difference over the course of a video can add up and cause the lag/stuttter/freezing. 
Also maybe this isn't limited to just VRR, if your source footage is even slightly off what the proxy is like 59.997 instead of 60 it might cause this. 
Don't forget to fix your timeline after this too!
Hope it helps friend! 

Lastly if it helps I am also using Pro Res Proxy. 
Tried a bunch of different presets and they didn't work until I did this.