Question / Help Capture Card Advice/NVENC for OBS & Webcam Issue Question

username_here

New Member
Okay, so. I've been having a problem for damn near a year and I'm only posting here to hopefully finally clear these things up once and for all. Hopefully I'm not cluttering up the forum.

First and foremost, here are my humble specs.
CPU: i7-860
GPU: GTX760
Mobo: OEM
Windows 10 x64 (also ran it on windows 7 for a long time)
Storage: 500GB SSD & 2TB HDD

I've had an immense interest in getting into the YouTube gaming scene for a long time. I wanted OBS to be the way I make that happen. Unfortunately I've been having these problems ever since I started using it and hopefully there are people here who can give me some insight.
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The first and most prominent problem is the fact that I've NEVER been able to get OBS to record gameplay at a smooth 60FPS/1080p. It'll record the desktop smoothly, just not games. I usually used NVENC and I think that's the source of most of the problem, but I don't know. These problems were present for me all the way back before OBS classic was OBS classic.
My usual setup:
Display capture
(I tried game capture as well, but the problems are still present. On windows 10 display capture seems to work just as well)
.mp4
NVENC encoder @ 50000 bitrate CBR, etc.
Keyframe Interval: 2
Profile: Main
Level: 4.2
DON'T use 2 pass encoding (it wrecks my NVENC chip apparently)
B-frames:2

Keep in mind that I've changed these settings around in every imaginable configuration and this SEEMS to work best for me. The NVENC preset seems to have the most direct impact on it. Which is supposed to work better? What usually happens is I start up a game and start recording it and while the video itself is 60FPS, the footage looks EXTREMELY stuttery. Like, 10FPS or something. Using the CPU to encode usually fixes some of it but it's never 100% smooth. It's never a full 60 all the time like I know my PC is capable of outputting. (I'm playing something like Rocket League, so nothing too intensive). The problem is my computer isn't powerful enough to CPU encode, so I need NVENC. I don't care about file size just quality. Mainly in terms of a stable, constant 60FPS. I can upload as large a file as I need, as I'm blessed to live in one of the few US cities that has gigabit internet... so my frustration is I have this amazing opportunity to upload anything... but I cant create recordings that are up to my standards.

Sometimes it will record at full 60 but there will be times where the recording seems to get stuttery for a while, then it'll go back to being smooth. Here's a demonstration of what it does: https://youtu.be/9yhImEufFaw?t=30s
Just watch about 20 seconds of that video and you'll notice it goes from full 60 to laggy. It later regains full 60. Another weird thing that OBS does is if I do something like minimize a game... sometimes the display capture will just go black, or perhaps display the last frame that it saw from the minimized game instead of the desktop. Hiding then showing the source again fixes it. I tried Xsplit out of curiosity and it didn't do that. But I hate the UI and the fact that it's expensive.

So my question is
1) is there a way to consistently produce smooth recordings of high quality that I'm missing? Does anyone have any advice?
2) Would a capture card aid in rendering totally smooth video? I'll buy one if I need to. Also would a capture card aid in reducing CPU/GPU usage? From what I gather it wouldn't?

Thank you for you time and sorry if my question is dumb. Let me know if you need more information. It acts like it's not going to let me upload a log so here's a google drive link to it:https://drive.google.com/file/d/0B_WPQmdewJBjVUNWTzdFaXFNUWc/view?usp=sharing
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Also I recently bought a logitech c920, and it tends to glitch out. This video demonstrates what it's doing in OBS https://www.youtube.com/watch?v=wxFdfXFT84I (this isn't me, but this perfectly illustrates what it does... I tried updating the BIOS, it didn't work). Do you think my webcam is defective (it was a refurb) or do you think it's related to the whole windows 10 update fiasco?
 

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