Bug Report OBS+DK2 - dropping fps for periods of time

[sloppy]

i have the latest version of OBS. i use it to preview stream/record stream my rift display so i can navigate menus/record in game etc.

DK2 requires 75fps, and with OBS recording, it will record fine at 75fps then for whatever reason, it will drop fps down for a period of time, then go back to 75.
see image below, over a 6 minute period of time.

this was on a driving simulator game, over multiple laps, so it wasn't as if there was more graphical intensity or something.
what could be causing it?

if i stopped the recording and started, it would return to normal, 75fps, then drop after 2-3 minutes.
why?

 

[Krazy]

A graph like that looks to me like thermal throttling. Check your CPU/GPU temps, make sure they aren't getting too high. Also, please post a link to your last log file. In OBS select Help > Log Files > Upload last Log File. Copy the URL and paste it here. See picture for steps: http://i.imgur.com/1tOZwtC.png

 

[sloppy]

last log file, https://gist.github.com/b54eb8820558c04146d6
and this is the associated graphs, this time showing gpu and cpu temps. All seems steady to me...
it's recording onto an SSD as well. if there is a bottleneck i cannot work out where it might be. The drop it fps seems to be consistent as you can see from the pattern below.

 

[Krazy]

Hm, please remove the Monitor Capture source and see if that helps. Monitor Capture is pretty awful on Windows 7, even with Aero disabled.