Question / Help Choppy Recording - Elgato 4K60 Pro MK.2 / PS4

zurian

New Member
Hi,

I setup my Elgato PCIe 4K60 Pro to my PS4 Pro today and tried to record a little bit of FIFA 20 with OBS Studio. Every single recording ended up choppy. I tried to change around in the settings a lot but nothing seemed to help the issue.

To determine whether the issue was with OBS, I also used Elgato's 4K Capture Utility. The preview windows was choppy (similar to OBS preview), but the end product was way smoother. There was a frame or so of chop but nothing comparable to OBS Studio

I have recorded a side by side comparison of a minute of gameplay to show what I mean: https://www.youtube.com/watch?v=usR48VgQjrE , most noticable chop in OBS is around 28 seconds and 1 minute 14 seconds. Canvas size for both recordings is 3840x2160 and then scaled down to 1920x1080 60 FPS.

I don't think my PC is the issue. My GPU only needed to utilize 40% of its capacity whilist capturing from two different softwares simultaneously, and according to OBS I had 0 missed and skipped frames. Average time to render around 1 ms

Specs of my PC:
MB: ASUS ROG Strix X570-E Gaming
CPU: Ryzen 3700x
GPU: NVIDIA GeForce RTX 2060 SUPER
RAM: G.Skill 32GB (2x16GB) DDR4 3600MHz CL16 (operating at 3600 after adjusting in bios)

The HDMI cable from my PS4 to the PCIe card is 5m , but it is a high end one and should manage 4K 60hz. Not sure if this matters?

I also tried to Stream on Twitch with OBS and chop occure there as well.

Log here: https://obsproject.com/logs/yd-sWfWnjT-CWKex

Some potential solutions I googled and tried:
- Disable Game Mode in Windows
- Run as administrator
- Disabled HDR on PS4 and turned off HDR on monitor connected to capture card
 
Last edited:
It sounds like you are trying to encode with CPU. Can you verify that in your output settings your selected encoder is the GPU?
 
Your log doesn't show any significant frame drop. What are you playing the recordings back with?

Would suggest switching to simple output mode, indistinguishable quality, large file size.

You can also try using a 1080p canvas instead of native canvas and downscaling.

In advanced mode you can also try turning these off as they also use GPU resources:

21:47:00.580: lookahead: true
21:47:00.580: psycho_aq: true
 
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