After testing the automatic game recording, I went to watch the recording in View > Recordings & Screenshots. When I click on the recording file to watch it, I get the error "An error occurred playing this saved recording" with a black screen throughout the whole timeline. However when I hover my mouse over the timeline I get the actual gameplay in the little preview window, so the recording seems to have actually saved, but for some reason cannot be played.

Edit: the error only seems to occur when I click on the timeline to fast forward or rewind. If I let the recording play continuously from the beginning, there is no error.

Settings:
Quality ultra
GPU hardware encoding on
HEVC on
Record mic and system audio on

OS: Windows 10
CPU: i7 4930k
Graphics: GTX 1080
Driver 566.03
No other recording software active.