Fixing what I pointed out dropped your lag percentage by about 17% so that's a good start.
For some reason your GPU is taking WAY too long to deliver the frame to OBS:
download_frame: min=0 ms, median=0.405 ms, max=184.408 ms, 99th percentile=67.667 ms
(and when you're running at 60fps that means you only have 16.66ms to get EVERYTHING done to avoid lagged frames/overload).
Usually that happens when running a game without vertical sync or a frame rate limiter, and that will frequently cause performance issues with OBS because your GPU will be maxed out. Enable vsync or set a reasonable frame rate limit that your GPU can handle without hitting 100% usage. If that's not enough you may also need to turn down some of the video quality options in the game.
Also make sure both your GPU drivers are on the latest version available, and that NVidia shadowplay is turned completely off.
Run CPU-z and make sure that your system is running in Dual Channel mode ("Memory" tab, top right in CPU-z).
Lastly it seems like something is chewing up CPU resources as well. It's taking a really REALLY long time for the 2nd audio track, and a long time for the 1st audio track to compress, which usually means something is stealing a lot of CPU cycles.