If you downloaded the file via torrent or NZB, one of the segments might be missing or corrupt. The ipzz214 release might be split into multiple .rar archives. Playing the raw extracted file without repairing the archive causes frame freezing.
: Standard default OS players often struggle with heavy 4K bitrates. Transition to advanced open-source tools like VLC Media Player or MPC-HC (Media Player Classic Home Cinema) combined with the LAV Filters package. Enable Hardware Acceleration : ipzz214 4k fix