Set the Output Mode as Simple, and go to Recording Quality, choose High Quality, Medium File Size, in this way, OBS won’t work harder to create a higher-quality video and take up mode CPU usage. By default, the recording format is mkv, you’d better change it to flv – the format that makes up the smallest file.

CQP is the better choice if you want the highest quality video possible, however, this comes with the caveat of larger video files. We would only recommend using CQP if you’re recording 1440p or 4k videos, and have extensive storage for the video files. OBS also allows you to record with lossless rate control.