I have both ATV4 and ATV4k
some of 1080i files stuttering on ATV4
Planet.Earth.S01.Special.Edition.Blu-Ray.1080i.VC-1.DTS-HD.5.1-ESiR
Format : VC-1
Format profile : Advanced@L3
Codec ID : 234
Duration : 49 min 10 s
Bit rate : 34.1 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.657
Stream size : 11.7 GiB (89%)
Top.Gear.Patagonia.Special.2014.BluRay.REMUX.1080i.AVC.DTS-HD.MA2.0
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 0 min
Bit rate mode : Variable
Maximum bit rate : 33.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Scan order : Top Field First
Default : Yes
Forced : No
