Elgato Capture Software Not Using Enough Upload Bandwidth

Skillful morn everyone.

I recently purchased a ElGato HD60S+ to stream on Twitch my gameplay.I'yard using a Xbox Serial X panel, paired with a Astro Mixamp TR 4th gen and Astro A40 4th gen. Due to the lack of optical out on series Ten, I was forced to buy a HDMI sound extractor to get optical to send to the mixamp. My setup is a little complex, but I'm attaching a quick draw I made.

For all you lot need to know though, is that the ElGato is connected to a USB 3.0 SS to my laptop, and I'k using OBS broadcaster. Astro Mixamp has a stream port that is connected via a 3.five mm jack to the Line in of the ElGato carte du jour, basically because I want the stream to hear exactly what I hear on the headset, and this is successful. The problem I'thou having is that on stream ONLY I'm getting a noticeable audio desync (one 2d or so) since the very kickoff of the stream, that seems to mildly worsen overtime every bit the stream goes on. I'm streaming at 1080p@30fps, and on stream the video is perfect: the prototype is very adept and in that location are no lag or stutters at all, just a delay in sound that is non synced with the video. I don't have this problem in the OBS preview that is perfectly synced and non even in the recordings, albeit I just took brusque clips (20-30s), just the stream is desynced from the start, so information technology's weird that recordings are not suffering the desync.

ElGato's software 4k Capture Utility is installed, but I don't want to utilize that to stream because it doesn't permit me add overlays and stuff like OBS does.

Both Xbox and laptop are connected through Wi-Fi, but I accept a quite powerful router and a very good Internet plan (1000Mbps) and so that shouldn't be a upshot, likewise since there are no lag / bufferings/ stutters on the stream at all.

My laptop is not very adept regarding specs, but many people already told me that information technology should be enough for my purpose.
Specs are:
CPU: Intel Core i5 8265 U @1.60GHz (4 cores, 8 threads)
GPU: Radeon (TM) 520 2GB VRAM
Retentivity: 8GB RAM DDR4

I will and then provide a log of the last stream, which clearly indicates that "adding Xx milliseconds of sound buffering, total audio buffering is at present Xx milliseconds". I was told that this could be caused by many different things, only since my specs aren't so skilful I was thinking of a CPU overload/underperforming. I was told information technology shouldn't exist the example since I'm NEVER getting "Reached Max sound buffering!" in the logs, even though my streams were never longer than two.5 hours.
I would exclude USB overload since I only take the ElGato connected and a wireless MnK dongle to my laptop.

The stream the log refers could be found at this URL:

Twitch

Twitch is the world's leading video platform and community for gamers.

world wide web.twitch.television set

Desync can be noticed in particuar when the burglarize shoots, audio comes similar one second or then subsequently.

Things I tried:

- Unchecking "use device timestamps" in OBS.
- Checking/Unchecking "utilise a custom audio device" in the properties of the elgato on obs.
- Tried both 48Khz and 44Khz in the OBS audio settings. ElGato should exist initialized at 48Khz, in the log I provided I was trying with 44Khz but it doesn't work either style;
- Fixing the initial delay by manually anticipating the audio by a negative offset (-430ms): the stream gets synced but information technology loses its sync again shortly after.

I'thou really going crazy over this, and I'thou sincerely hoping that anyone could assistance me gear up this issue that is so impacting my stream's quality. :(

burksandes1990.blogspot.com

Source: https://obsproject.com/forum/threads/audio-desync-on-stream-only-with-elgato-hd60s-im-desperate.140310/