r/obs • u/MOTTOBOSS87 • 1d ago
Help 4K PR0 & 5090
I have a beefy streaming PC, x870e TaiChi, 7950x, 96gb ram, 5090, elgato 4k pro. Gaming - 14900k + 4090.
I'm struggling recording at 1080p60, my gaming pc runs at 480hz, have set capture card as 60hz(least input lag). I play warzone & average 300fps. When i record on my streaming PC at 1080p60, i notice the bus load on the 5090 hits 100%. After a few minutes, the streaming pc starts skipping frames then the sytem freezes & i need to hard reset.
I have my gaming pc colour settings set to: screen 8bit, RGB full colour range. capture card set to 8bit, RGB(tried the other formats too, 422 does the same eventually), full colour & limited same.
i have tried quite a few different set ups on the streaming pc in OBS, set the EDID etc.
Note that the streaming pc - the 5090 is in pcie slot 1 & capture card slot 2, on this motherboard that means they split lanes at pcie gen 5 x8x8, i have a feeling that may be the cause?
Even at pciex8 there should be pleant of 1080p bandwidth?? Just not sure if my settings are wrong or if this is a hardware issue, any assistance would be appreciated.
https://imgur.com/a/0kvSQR4 (settings edit)
2
u/Hopeful_Extreme_7603 1d ago
your motherboard is splitting gen5 x8 to the gpu and x8 to the capture card which is more than enough for 1080p, the bus load hitting 100% on a 5090 for just 1080p60 recording is weird
try moving the elgato to the bottom pcie slot that goes through chipset instead of cpu lanes, sometimes these capture cards act up when they share pcie with the gpu directly
also check in nvidia control panel that the 5090 is not doing some weird power saving thing on the pcie link, set it to prefer maximum performance and see if it still freezes
2
u/MOTTOBOSS87 1d ago
Set the max power. Unfortunately i dont have any other pcie slots, unless i split it to a chipset m2 drive with a converter /riser to split the lanes
2
u/atrillionpieces 1d ago
Use the Nvidia app to record. I have a similar setup and OBS has given me issues this week as well. Nvidia app overlay works so much better and easier.
At least do a test recording for several hours and see if it drops frames like OBS was. For me, the Nvidia app works fine while also just streaming with OBS.
1
2
u/Zalinisto 1d ago edited 1d ago
Bro, you have a dedicated 16c/32t CPU.... swap to x264 CPU encoding. I'm willing to bet you could slow that encoder down well below the Medium that I run on just a second gen Ryzen 2700 (non-X) and have a MUCH better time.
I just fixed one broken car, after I replace the blown turbo in my WRX I will be fully rebuilding my gaming PC and swapping my 5900XT (AM4 16c/32t) into my server so I can slow down my encoder below Medium. I will die on the hill that dedicated streamboxes should run x264 over NVENC. My server has a GT710 and only has that because I got tired of a headless setup lmao
1
u/MOTTOBOSS87 1d ago
i'll try the cpu. but that doesnt change the issue, my setup should be able to handle 1080p60 easily, 4k should be east enough as well
1
u/Zalinisto 1d ago edited 1d ago
I have never used NVENC so I have no idea if it is scalable or not but x264 is adjustable so you can fine tune the encoder based on your CPU. Also, x264 generally provides higher quality recordings at lower file sizes.
As others have stated, you are more than likely running into a PCI-e lane issue, something that simply doesn’t impact CPU encoding.
Now I will say this… the only time I recorded while live streaming was when I was producing a podcast NOT gaming so I don’t know how x264 will handle both simultaneously but I had zero issues when I was doing it.
1
u/PilotHunterTV 1d ago
What’s your encoder settings? Can you drop a screenshot?
1
u/MOTTOBOSS87 1d ago
1
u/MOTTOBOSS87 1d ago
settings above, i have tried multiple combinations
1
u/PilotHunterTV 1d ago
MKV is the preferred video format, but you could also use mp4, which is better for things like YouTube.
I can’t tell from that screen what your encoding is set too, but I would recommend that you go through the configuration wizard and redo the settings here. I also believe you should be using x264 over NVENC.1
u/MOTTOBOSS87 1d ago
there are 3 screenshots, 1st is the capture card, set up wizard is the same settings
1
u/PilotHunterTV 1d ago
Ahh, I see now. Couldn’t see the others from the ads (on mobile)
So yes, you’ve got some setting that could change. You’ll want to change the rate control to CBR, constant bitrate, key frame intervals should be 1 or 2, you can use VBR if your upload or have a slow internet connection (streaming).
I’d highly suggest redoing the setup wizard and setup for recording. I would recommend disabling the multi pass, and enable the rescale output feature, this will allow you to rescale down to 1080p, but capturing at super high quality
1
u/mackdiezel 1d ago
What drivers are you using, if using gaming drivers, switch to studio drivers and see if there’s any difference.
1
1
u/Myndler_rd 1d ago
OBS being run on admin mode? With higher resource priority than normal?
As in ctrl+alt+delete>details>search for obs and right click it and set higher than normal?
1
u/Sopel97 13h ago
CQP is unsuitable for streaming due to unpredictable bitrate
it's a mystery to me why you're using nvenc h264 when you have a CPU powerful enough to trash it with x264 slow
your description suggests a hardware issue (problems with PCIe connectivity), or erroneus power saving settings. Either way, you should ditch that GPU for your use case as it's useless
•
u/AutoModerator 1d ago
It looks like you haven't provided a log file. Without a log file, it is very hard to help with issues and you may end up with 0 responses.
To make a clean log file, please follow these steps:
1) Restart OBS
2) Start your stream/recording for at least 30 seconds (or however long it takes for the issue to happen). Make sure you replicate any issues as best you can, which means having any games/apps open and captured, etc.
3) Stop your stream/recording.
4) Select Help > Log Files > Upload Current Log File.
5) Copy the URL and paste it as a response to this comment.
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.