Judder on some 720p videos



I use Kodi to playback TVHeadend OTA recordings on my 2019 Shield TV Pro.  Lately I’ve been having judder problems on some ABC 720p recordings.  This was happening with Nexus and now Omega.  The problems don’t seem to occur when I’m watching live 720p TV in Kodi.  Some recordings (i.e., AFV) never have problems.  Other recordings (The Connors, Will Trent) will have judder problems most of the time.  Sometimes it will play without judder if I restart Kodi.  However sometimes I will see the screen momentarily go black like it does during a resolution change and then the judder will start happening again. 

I have my resolution set to 3840x2160p @ 59.94Hz and the player to adjust refresh rate on start/stop.  Whitelisting a resolution doesn’t seem to adjust resolution during playback of a recording, just when watching live TV.  However it does allow me to select a different resolution during recording playback.  My current workaround for this is to whitelist 3840×2160 @ 29.87Hz.  This resolution eliminates the judder (1280x720p @ 59.94Hz doesn’t) and allows me to select it during playback.  

Are there some recommended settings to fix this or a better workaround?