I'm just wondering at this point, is your monitor a 30hz or 60hz or higher? just wondering
(I know this is plain obvious, but make sure that your speakers are on) {that is just a joke}
The En.us is just an error and there's a similar mac issue at
https://github.com/johnboiles/obs-mac-virtualcam/issues/31 but if you are on windows like me, err...
I made a small video to look at a log, and
I get a similar error like
08:41:24.854: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
08:41:24.855: Failed to load 'en-US' text for module: 'decklink-ouput-ui.dll'
08:41:24.884: [AMF] Unable to load 'amfrt64.dll', error code 126.
08:41:24.886: [AMF] AMF Test failed due to one or more errors.
08:41:24.886: Failed to initialize module 'enc-amf.dll'
08:41:24.904: [obs-browser]: Version 2.8.7
08:41:24.907: NVENC supported
08:41:24.974: Couldn't find VLC installation, VLC video source disabled
08:41:24.979: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
08:41:24.980: No blackmagic support
but I still get audio so that isn't the problem either.
I now believe either there is a speaker issue or something else, and isn't an issue from OBS.
Im not an expert so I can't help with stuff that is too advanced like %CCYY-%MM-%DD %hh-%mm-%ss in the Advanced section (whatever the hell that means).
Sorry about how I'm not the best, but I just started answering threads so...
I hope you figure it out!
EDIT: In the log, nothing seems to be wrong besides the partial Log that is in both logs. I still get audio however which means either your speaker might be broken or another issue I have no idea of.