Encoder usage doubled and has become very unstable

[WaveSmash]

For the past few years my encoder usage has been about 34% under load with my usual settings. Within 5% or so of 34%, but ALWAYS very close. It was stable and worked ok. But recently the encoder usage generally hangs out around double the expected usage at 65%. When I start recording the usage starts off at the expect %, but then doubles and stays there. Sometimes it briefly comes back down to the expected usage, but then goes back up in a second or two. The usage is unstable with literally no sources too. It was stable before. Latest Nvidia drivers, and a version which the VR community recommends because the latest actually introduced MORE instability.

Analyzer | OBS

OBS (Open Broadcaster Software) is free and open source software for video recording and live streaming. Stream to Twitch, YouTube and many other providers or record your own videos with high quality H264 / AAC encoding.

obsproject.com

 

[WaveSmash]

Forgot to mention, these screenshots are taken with NO SOURCES!!!! When I add a game capture source with an FPS game which has high movement and usually increases the encoder usage a little, it's equally unstable.

 

[WaveSmash]

This is the Steam game recording beta. The encoder usage is nice and perfectly stable. Exactly how it used to work. Something happened to OBS.