How to check?Are you using custom ffmpeg options?
17:32:11.529: [NVENC encoder: 'streaming_h264'] settings:
17:32:11.529: rate_control: CBR
17:32:11.529: bitrate: 2500
17:32:11.529: cqp: 0
17:32:11.529: keyint: 250
17:32:11.529: preset: hq
17:32:11.529: profile: high
17:32:11.529: width: 1920
17:32:11.529: height: 1080
17:32:11.529: 2-pass: false
17:32:11.529: b-frames: 2
17:32:11.529: GPU: 0
17:32:11.529:
17:32:11.531: [ffmpeg] [h264_nvenc @ 000001a7bf338240] Loaded Nvenc version 9.1
17:32:11.531: [ffmpeg] [h264_nvenc @ 000001a7bf338240] Nvenc initialized successfully
17:32:11.546: [ffmpeg] [h264_nvenc @ 000001a7bf338240] 1 CUDA capable devices found
17:32:11.546: [ffmpeg] [h264_nvenc @ 000001a7bf338240] [ GPU #0 - < GeForce GTX 1080 > has Compute SM 6.1 ]
17:32:11.657: [ffmpeg] [h264_nvenc @ 000001a7bf338240] supports NVENC
Post a screenshot of your stream encoding settings.
The logs are saying that it's reverting to the older nvenc encoder, with extra entries for ffmpeg that aren't usually used:
Code:17:32:11.529: [NVENC encoder: 'streaming_h264'] settings: 17:32:11.529: rate_control: CBR 17:32:11.529: bitrate: 2500 17:32:11.529: cqp: 0 17:32:11.529: keyint: 250 17:32:11.529: preset: hq 17:32:11.529: profile: high 17:32:11.529: width: 1920 17:32:11.529: height: 1080 17:32:11.529: 2-pass: false 17:32:11.529: b-frames: 2 17:32:11.529: GPU: 0 17:32:11.529: 17:32:11.531: [ffmpeg] [h264_nvenc @ 000001a7bf338240] Loaded Nvenc version 9.1 17:32:11.531: [ffmpeg] [h264_nvenc @ 000001a7bf338240] Nvenc initialized successfully 17:32:11.546: [ffmpeg] [h264_nvenc @ 000001a7bf338240] 1 CUDA capable devices found 17:32:11.546: [ffmpeg] [h264_nvenc @ 000001a7bf338240] [ GPU #0 - < GeForce GTX 1080 > has Compute SM 6.1 ] 17:32:11.657: [ffmpeg] [h264_nvenc @ 000001a7bf338240] supports NVENC
And then?Uncheck Rescale Output.
Post a new log file with it unchecked.