Changing advanced options should never be done unless you fully understand what you are doing. You can very easily end up with a bad quality stream, throughput problems or excessive CPU usage by changing these settings.
This will use multiple threads for color space conversion, maximizing benefit from multi-core CPUs. There's almost no need to ever turn this off.
Sets the process priority for OBS. As encoding can consume a lot of CPU, setting this to say "above normal" can sometimes be useful to ensure capturing and encoding is done in a more timely fashion.
Sets the amount of milliseconds the scene is buffered before being sent to the encoder. Only change this value if you know what you are doing. Lowering the value can lead to audio and synchronisation problems.
This setting completely de-activates the encoder while a preview is running to lower the cpu consumption.
Activates the use of several modifier keys to be used as hotkeys.
This setting determines how much CPU you want the video encoder (selected in your encoding settings) to dedicate for encoding. Settings this to a slower/lower value means the encoder will use more CPU to try to improve quality, setting this to a faster/higher will cut certain quality features in order to reduce CPU usage. Generally, the best setting is "veryfast", as it arguable gives the best tradeoff between CPU usage and quality. If you have a slower CPU or a CPU with two or fewer cores, sometimes using "superfast" and "ultrafast" are recommended in order to further reduce CPU usage, though at the cost of quality. Setting it to "faster", "fast", and below is generally not recommended and does not improve quality enough to where the increased CPU usage is justifiable.
This will force OBS to output at a constant frame rate, duplicating frames if necessary to achieve this. This is intended to make the video files compatible with editors and decoders that don't properly support variable frame rate.
If you understand x264 internals, you can override any of the internal x264 parameters here. It is highly recommended that you do not paste anything that you may have found in any guides, you should almost never actually need to specify anything here. This is mainly for developers or users who understand the x264 internals.
Allows you set values above 60 FPS on the Video settings. Most people only have 60 Hz screens, so going higher FPS is almost never needed and will increase encoder CPU usage. This is an advanced option for people looking to experiment only.
This option allows you to use input(recording) devices to be used for audio input, instead of a playback device. You will not be able to capture your desktop sound while this option is active.
This will construct desktop audio timestamps from the video timestamps rather than obtain timestamps directly from windows itself. This is only for the desktop audio, this is not for mic/auxiliary/webcam/device sync.
When activated this option tries to use the Microphone QPC timestamps to synchronize your audio and video.
If you have multiple network interfaces, select the one which you wish OBS to use.
These are advanced options used to fine tune the "Minimize network impact" option. The effect varies depending on the network conditions. Higher value increases spacing between packets. This is a very last-resort option for precise fine tuning of packet intervals