As chewitt stated above, 4k hevc is not working with LE, but it works just fine with CoreELEC, even with bitrates at 100Mb/s and sizes up to 100GB.
Played this a moment ago:
Fullständigt namn : E:\4k Film\All of Us Strangers (2023)(UHDBD)(x265 10bit HDR DV) 2160p\All of Us Strangers (2023).mkv
Format : Matroska
Formatversion : Version 4 / Version 2
Filstorlek : 71,5 GiB
Varaktighet : 1 h 45 min
Sammanlagt dataflöde : 96,9 Mb/s
Bildfrekvens : 23,976 FPS
Ttitel : All of Us Strangers (2023)
Kodningsdatum : 2024-08-29 14:12:43 UTC
Skrivande program : mkvmerge 85.0 ('Shame For You') 64-bit
Skrivande bibliotek : libebml v1.4.5 + libmatroska v1.7.1
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Formatprofil : Main [email protected]@High
HDR format : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.06, BL+EL+RPU, no metadata compression, Blu-ray compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible
Kodek-ID : V_MPEGH/ISO/HEVC
Varaktighet : 1 h 45 min
Dataflöde : 93,1 Mb/s
Bredd : 3 840 pixlar
Höjd : 2 160 pixlar
Skärmbildförhållande : 16:9
Bildfrekvensläge : Konstant
Bildfrekvens : 23,976 (24000/1001) FPS
Färgrymd : YUV
Kroma-delsampling : 4:2:0 (Type 2)
Bitdjup : 10 bit
Bitar/(Pixlar*bildruta) : 0.468
Strömstorlek : 68,7 GiB (96%)
Default : Ja
Forced : Nej
Färgskala : Limited
Primärfärger : BT.2020
Överföringsegenskaper : PQ
Matriskoefficienter : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0001 cd/m2, max: 1000 cd/m2
No problems what so ever.