I don't seem to have that problem with my BS850 - at least playing back the few programs I've so far recorded in HD such as Torchwood.

My HDMI setting are

PCM downmix -off
Dolby HD - PCM
DTS HD -PCM
BD secondary audio -off

Cliff

Main system - Sources (Kodi-HTPC, Vero 4k, FireTV, Sat) into Trinnov Altitude 32 (8-16) (+Roon), Trinnov Amplitude 8 amp & Vivid Audio (Giya G3, V1.5) and REL Stentor III speakers. Others: F80 + Raspberry Pi and other Pi systems.