High CPU usage in windows 11 24h2

mici1708

New Member
OBS since I updated the PC to windows 11 24h2 is using too much CPU than normal.
BEFORE: 0.1/0.2%
AFTER: 0.9/2.5%
Logs and my settings
 

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PolitoKB

New Member
Hello i have the same issue, have you found a fix for it? my laptop was 0.3% and then it goes up to 1.0% when i stream on youtube it goes up like 1.7% or 1.8%, before always stayed on 0.3%
 

prgmitchell

Forum Moderator
I wouldn't doubt if there is some difference with 24H2 but what are you actually trying to solve here? The % differences you posted are negligible and wouldn't be something to fix within OBS, there may not be anything to fix at all.
 

jeeeees

New Member
Hi,

Been trying to look into this for a while now i have a 2 pc set up and the second pc is only for OBS and Discord, Streamerbot and google.
In 23h2 i was averaging 2-4% cpu usage in obs with aitum multistream added aswell.

Since 24h2 this has jumped to 20% while streaming so i guess in essence the difference isnt negligable at this point for me and is causing encoding issues where it was perfect before.

Is this something that is known by the devs ?

and is there something i can do to help with this either in the 24h2 settings or OBS itself ??

"edit"

i have rolled back and tried to restrict the update but as its a core update its trying to install every time and at somepoint its gotta happen. I dont know enough OS to understand how it can be so different but dayum its a pain.
 

Faz8

Member
I KNEW I WASNT TRIPPING. I can confirm that I'm running into the same error. I RARELY had more than 1% cpu usage before 24h2. Ever since I updated its been above that with minor stutters, and on very rare occassions it uses 5% CPU usages and the recording is unusable, having to restart my PC to "fix" it
 

MrGhost

Member
Hi,

Been trying to look into this for a while now i have a 2 pc set up and the second pc is only for OBS and Discord, Streamerbot and google.
In 23h2 i was averaging 2-4% cpu usage in obs with aitum multistream added aswell.

Since 24h2 this has jumped to 20% while streaming so i guess in essence the difference isnt negligable at this point for me and is causing encoding issues where it was perfect before.

Is this something that is known by the devs ?

and is there something i can do to help with this either in the 24h2 settings or OBS itself ??

"edit"

i have rolled back and tried to restrict the update but as its a core update its trying to install every time and at somepoint its gotta happen. I dont know enough OS to understand how it can be so different but dayum its a pain.
You can prevent windows from updating, but you have to firewall out windows update.
I KNEW I WASNT TRIPPING. I can confirm that I'm running into the same error. I RARELY had more than 1% cpu usage before 24h2. Ever since I updated its been above that with minor stutters, and on very rare occassions it uses 5% CPU usages and the recording is unusable, having to restart my PC to "fix" it
 

R1CH

Forum Admin
Developer
Are you sure you're measuring correctly? 20% usage of a core running at 800 MHz is less than 5% usage of a core running at 5 GHz. CPU based percentages don't take into account the core speed, so if Windows is lowering the core speed it will look like OBS is using more CPU when in reality there was no need to run the core at full speed.
 

mici1708

New Member
Are you sure you're measuring correctly? 20% usage of a core running at 800 MHz is less than 5% usage of a core running at 5 GHz. CPU based percentages don't take into account the core speed, so if Windows is lowering the core speed it will look like OBS is using more CPU when in reality there was no need to run the core at full speed.
how to fix it?
 

rayhunt

New Member
See if you have an option in Windows Recovery to "Go Back" (roll back to the previous Windows version - 23H2)
 

SaintMichaels

New Member
Same issue here. OBS used to use 5% to 6% CPU to stream. After the 24h2 update, it uses 23% to 25%. I knew it was happening and figured it was the most recent Windows Update, but this thread confirmed it.

Have the OBS developers at least identified the issue? Is there any timing for a fix?

Thanks.
 

PaiSand

Active Member
Are you sure you're measuring correctly? 20% usage of a core running at 800 MHz is less than 5% usage of a core running at 5 GHz. CPU based percentages don't take into account the core speed, so if Windows is lowering the core speed it will look like OBS is using more CPU when in reality there was no need to run the core at full speed.
 

SaintMichaels

New Member
Just looking at the OBS CPU: % in the taskbar. It dropped significantly with the OBS 29 update, then increased significantly with the recent Windows update. Nothing else has changed on the streaming PC. My guess is codec or other changes in the 24H2 update. Hopefully, the brains at OBS know what it is and can fix it.
 

briskimj

New Member
Not to piggy back off this thread, but I'm also finding the same issue. I'm on OBS Studio 30.2.3, and when idle without streaming my OBS shows between 15% - 17% CPU usage. I think before any updates my OBS used to idle somewhere around 6%
 

seansheehanba

New Member
Same thing happening to me! Went from around 2% CPU to 12%. Caused my audacity to crash when recoding with both and I lost some audio. Tried an older very of OBS and that didn't work. Deleted all my scenes. Didn't work. Still have the same issue. Did anyone find a fix? Really getting desperate.
 
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