My computer, which is pretty beefy, lags when OBS is open. It never lagged on my laptop which is not beefy at all. I have included a clip showing the differences and I have a log file.
Video: https://goo.gl/photos/w5K6d8SzCbWq5umc7
Log File: https://gist.github.com/7ea305519fb32b5a62ee94f5c77829ca
Video: https://goo.gl/photos/w5K6d8SzCbWq5umc7
Log File: https://gist.github.com/7ea305519fb32b5a62ee94f5c77829ca