Unusable...

[kenji_hayakawa]

OBS is heating up my CPU so much that it's unusable. The log analyzer isn't helping either. What is going on?

I've attached the log file.

Also, here's the screenshot of my Activity Monitor when running OBS.

 

[kenji_hayakawa]

Self-update: I've since installed Turbo Boost Switcher and it made a big difference. Now, CPU temp usually stays at around 70℃ and rarely exceeds 80℃. I'd still be curious to learn how to improve my OBS configuration to further reduce the CPU temperature, but for now things are looking tolerably fine.

 

[XLCOLDJ]

How are your Statistics looking in OBS? Do you have multiple displays?

You could try setting close_when_inactive to true on all those input sources.
Also, it might be better to render the "speed 80" mp4 at the speed you actually require instead of using OBS to slow it down.

 

[kenji_hayakawa]

How are your Statistics looking in OBS? Do you have multiple displays?

You could try setting close_when_inactive to true on all those input sources.
Also, it might be better to render the "speed 80" mp4 at the speed you actually require instead of using OBS to slow it down.

View attachment 97151

Thanks for the helpful reply! I've set the close_when_inactive to true for all of the media sources.

Another problem I'm facing is that Window Capture (from macOS Screen Capture) doesn't remember the window or app. An example is when I open a file called "P10.pdf" using Adobe Acrobat Reader and Window Capture it, and then close OBS and Adobe, and re-open both, the same Window Capture no longer captures Adobe but instead captures some other random window that happens to be top on the list. Why is this happening, and is there a way to get each Window Capture to remember the window name or app (just like in Windows)?

Relatedly, whenever I try to use the Application Capture feature, my MacBook instantly starts heating up, even after enabling Low Battery mode and turning off Turbo Boost. As a result, the Application Capture feature is unusable. I'm attaching a log of a session where I added a new Application Capture to the scene and, predictably, the MacBook's CPU temp went from around 55℃ up to 75℃ in a few seconds (it would have gone as high as 100℃ had I let it keep running, but I deleted the Application Capture to prevent that from happening). This issue makes Application Capture unusable.

 

[XLCOLDJ]

Why is this happening, and is there a way to get each Window Capture to remember the window name or app (just like in Windows)?

I didn't know it worked in Windows. I'm not sure why it's like that, but yeah, it seems like you have to set it up for each broadcast or recording session. I try not to use it at all. The application capture doesn't have this issue on restart.

Relatedly, whenever I try to use the Application Capture feature, my MacBook instantly starts heating up, even after enabling Low Battery mode and turning off Turbo Boost. As a result, the Application Capture feature is unusable.

In the menu, open up View>Stats and then add the Application Capture source to trigger the problem.

Do you have the same issue with any application as the source? If you have other applications running in the background, you should also check Activity Monitor.

Do you have any Youtube pages open in Firefox tabs?

 

[kenji_hayakawa]

I didn't know it worked in Windows. I'm not sure why it's like that, but yeah, it seems like you have to set it up for each broadcast or recording session. I try not to use it at all. The application capture doesn't have this issue on restart.


In the menu, open up View>Stats and then add the Application Capture source to trigger the problem.

Do you have the same issue with any application as the source? If you have other applications running in the background, you should also check Activity Monitor.

Do you have any Youtube pages open in Firefox tabs?

Thanks for the reply and sorry about my late response.

I've tried using Application Capture, but the heating problem persisted. I'm attaching the log file and a screenshot of Activity Monitor.

I didn't have any YouTube or other multimedia sites open, and I only tried to capture Adobe Acrobat, but my MacBook quickly heated +25℃ (from 50 to 75) and my fan was at maximum speed to keep the CPU temp stable at 75.

Not sure why this is happening or what the solution might be. Further advice would be highly appreciated!

 

[thomaslfessler]

The problem is Intel iGPU heat. OBS on a mac can easily saturate a Mac Studio Ultra so I can see why your intel macbook is overheating.

 

[kenji_hayakawa]

The problem is Intel iGPU heat. OBS on a mac can easily saturate a Mac Studio Ultra so I can see why your intel macbook is overheating.

Thanks for the reply.

Is there a way to optimize my settings given the hardware constraints? I'm attaching another recent log, where during a 3-hour stream my CPU would abruptly heat up to around 75℃ for seemingly no reason and then go back down to around 60℃ after a while.

For example, should I use a different encoding option, a different preset for my camera input, etc. etc.?

 

[kenji_hayakawa]

Bumping this up, as I have a new issue with overheating. I had to trade in my MBP 2019 for a new one with the following specs.

MBP 2019 16-inch display
Processor: 2.4 GHz 8-Core Intel Core i9
Graphics: AMD Radeon Pro 5500M 4 GB / Intel UHD Graphics 630 1536 MB
Memory: 64 GB 2667 MHz DDR4
OS: Sonoma 14.3.1

The problem now is that every time I run my stream, my CPU heats up to upper-70℃〜80℃. I've monitored my CPU and GPU, but as far as I can see, usage rates seem well under capacity (see below).

I changed Low Power Mode to 'Always' and disabled Turbo Boost, but the overheating persists.

Is there a way to bring down the CPU temperature to under 70℃?

 

[rockbottom]

Why? It will throttle when it hits T Junction @ 100c. 80c is nothing to worry about, they're designed to run up to the limit.

 

[rockbottom]

The fan curves are more than likely controlled in BIOS, if you want to make adjustments if needed. They may already be running @ 100% @ 80c. Check the mobo Owners or BIOS manual before proceeding if you're not familiar with BIOS.

 

[kenji_hayakawa]

Thanks for the reply. I will familiarise myself with BIOS. I use Mac Fans Control and the fans are running at pretty much 100% at 80℃.

Would switching to an Apple M1 Pro processor would make any positive difference? (As per thomaslfessler's reply that the problem is with Intel iGPU heat).