21:10:26.358: Windows Version: 10.0 Build 17134 (revision: 523; 64-bit)
Windows is out of date.
21:10:26.640: OBS 21.1.2 (64bit, windows)
OBS is out of date. Download new version manually.
21:10:34.560: adding 278 milliseconds of audio buffering, total audio buffering is now 278 milliseconds
21:10:34.648: adding 46 milliseconds of audio buffering, total audio buffering is now 325 milliseconds
21:10:34.782: adding 23 milliseconds of audio buffering, total audio buffering is now 348 milliseconds
21:10:42.360: adding 23 milliseconds of audio buffering, total audio buffering is now 371 milliseconds
21:10:42.600: adding 23 milliseconds of audio buffering, total audio buffering is now 394 milliseconds
21:10:42.697: adding 23 milliseconds of audio buffering, total audio buffering is now 417 milliseconds
21:10:42.777: adding 23 milliseconds of audio buffering, total audio buffering is now 441 milliseconds
21:10:42.883: adding 46 milliseconds of audio buffering, total audio buffering is now 487 milliseconds
21:11:04.751: adding 23 milliseconds of audio buffering, total audio buffering is now 510 milliseconds
21:11:22.770: adding 23 milliseconds of audio buffering, total audio buffering is now 534 milliseconds
21:12:15.026: adding 46 milliseconds of audio buffering, total audio buffering is now 580 milliseconds
21:12:15.146: adding 23 milliseconds of audio buffering, total audio buffering is now 603 milliseconds
21:40:17.359: adding 23 milliseconds of audio buffering, total audio buffering is now 812 milliseconds
21:40:17.440: adding 23 milliseconds of audio buffering, total audio buffering is now 835 milliseconds
21:40:17.494: adding 46 milliseconds of audio buffering, total audio buffering is now 882 milliseconds
21:40:17.593: adding 69 milliseconds of audio buffering, total audio buffering is now 952 milliseconds
21:40:17.693: adding 46 milliseconds of audio buffering, total audio buffering is now 998 milliseconds
21:40:17.743: Max audio buffering reached!
21:40:17.743: adding 46 milliseconds of audio buffering, total audio buffering is now 1044 milliseconds
The above is a sign of significant system overload.
21:15:11.340: error: error while decoding MB 17 12, bytestream -14
21:15:12.377: error: error while decoding MB 57 18, bytestream -6
21:15:12.429: error: co located POCs unavailable
21:15:12.454: error: co located POCs unavailable
21:15:12.476: error: co located POCs unavailable
21:15:12.599: error: co located POCs unavailable
21:15:12.779: error: error while decoding MB 89 39, bytestream -8
Looks like you've got media sources with the "use hardware decoding" option checked and the decoder is encountering an error. If this is true, try turning that option off.
22:33:19.246: Video stopped, number of skipped frames due to encoding lag: 9910/143460 (6.9%)
You are overloading your CPU even at 720p30 and superfast preset. This machine is basically under the minimum spec for OBS Studio. Try going to ultrafast and/or going lower than 720p30.