I have two Oppo 93: an ISO firmware model and one with the almost latest firmware. I have 1080p and 1080p24 set for both but I use the 93 with the most recent firmware for most of my viewing.
Recently I have been noticing that 720p24 mkv are being upconverted to 1080p60 whilst 720p23 mkv are being upconverted to 1080p24.
In the past I have noticed 1080p24.99 being interpreted as 1080p23 resulting in dropped frames on playback instead of 1080p50.
Is there a known issue with handling of frame rates other than 23.98fps and 25fps, especially with 720p source?