Question / Help Minecraft drops to 20 FPS when recording in Full Screen

[lightpower26]

The other day, I wanted to record myself doing a horror map, just for the fun of it. When I was checking to see everything is working, I realized that as soon as I went into full screen, OBS just dropped my framerate to 20, which is constantly dropping and going up, making the video look like a disaster. Not only is the video experiencing this, but I am as well. During installation, this error message pops up and I click ignore.

I set up OBS to record Minecraft with a Game Capture source and try it out
(The video says I have my crappy integrated graphics and not my NVIDIA GeForce 960m)

I've had this issue in the past, but I simply fixed it by switching to a Display Source and changing the renderer to OpenGL instead of Direct3D 11. This fix no longer works.

 

[lightpower26]

Here's a bunch of screenshots of my settings. Audio is not included because this is a framerate issue. Streaming also isn't included because I don't stream, I record

Also, I'm not sure where to find my log file, so if someone could point that help, I'd appreciate it.

My specs:

Processor - Intel i7 Quad-Core 6th Gen
GPU - NVIDIA GeForce GTX 960m
RAM - 16 GB DDR4

 

[alpinlol]

Posting a Logfile would be easier and its also advised to do so on the Stickies

 

[lightpower26]

I know that, alpin. In my reply showing my options and specs, it says "I'm not sre where to find my log file, so if someone could point that help" ("help" is meant to be out, I wrote this when I was tired)

 

[Beardedbob]

log file instructions here https://obsproject.com/forum/threads/please-post-a-log-with-your-issue-heres-how.23074/

 

[lightpower26]

Alright, here's my log file

 

[Beardedbob]

Hi,

you are getting the following issue in the log "Number of lagged frames due to rendering lag/stalls: 239 (26.2%)"

change the following in your stream settings to see if this helps:

08:11:52.291: [x264 encoder: 'simple_h264_stream'] preset: veryfast - change to ultrafast

08:11:52.291: fps_num: 60 - change to 30 fps

 

[Wakky]

If you are recording and not streaming why do you use CBR at 2500kbps?

Follow this guide https://obsproject.com/forum/resources/obs-classic-how-to-make-high-quality-local-recordings.16/ it wont fix your problem but it could allow you to avoid it. You can even record without rescaling your resolution.

 

[lightpower26]

Well, I made all the changes Beardedbob and Wakky presented. In the guide, Wakky, it says it's for OBS Classic, but I'm using Studio. Nonetheless, there were a couple things in there that are also in Studio, but they still didn't fix my issue.

Something I noticed - When Minecraft is in a window, the game runs at about 120 FPS. As soon as I get into full screen, it drops down. The changes helped a tiny bit, spiking only a few times at 30, but it wasn't enough.