OBS + Shadowplay = 100% CPU usage

O

Ollek

New Member
Hi there,
for a few days somehow when I start Shadowplay (while streaming with OBS Studio 0.13.2 I geht 100% CPU usage somehow. It never happened before. I normaly have around 50% CPU usage. Also, I cannot press my alt+F9 keys to start recording. OBS just flashes everytime I press alt+F9 and I have to repeadedly alt+tab to the Shadowplay window and press there my alt+f9 keys to make it start recording.

What I also recognised is, that whenever I start Shadowplay my dwm.exe crancks up from 0,8% to about 17% CPU usage - but only when OBS is running. When I turn off OBS, my CPU usage is about 30-40% with shadowplay turned on!

I don't know what happened. It did work for so long, and now I get huge laggs ingame because of the 100% CPU usage and it is so annoying to start a recording session or even save the last 5 minutes of gameplay.

Anyone here who can helpt?

------
Win 10 64bit (latest update)
Nvidia Driver 368.81
OBS Studio 0.13.2


Thx.
 
D

dping

Active Member
Ollek said:
Hi there,
for a few days somehow when I start Shadowplay (while streaming with OBS Studio 0.13.2 I geht 100% CPU usage somehow. It never happened before. I normaly have around 50% CPU usage. Also, I cannot press my alt+F9 keys to start recording. OBS just flashes everytime I press alt+F9 and I have to repeadedly alt+tab to the Shadowplay window and press there my alt+f9 keys to make it start recording.

What I also recognised is, that whenever I start Shadowplay my dwm.exe crancks up from 0,8% to about 17% CPU usage - but only when OBS is running. When I turn off OBS, my CPU usage is about 30-40% with shadowplay turned on!

I don't know what happened. It did work for so long, and now I get huge laggs ingame because of the 100% CPU usage and it is so annoying to start a recording session or even save the last 5 minutes of gameplay.

Anyone here who can helpt?

------
Win 10 64bit (latest update)
Nvidia Driver 368.81
OBS Studio 0.13.2


Thx.
Click to expand...
capturing with multiple hooks is never easily supportable. never the less, you need to post a logfile with an actual example of you recording and/or streaming.
 
S

Schauerland

Member
shadowplay does not hook as far as i know. it grabs images directly from the buffer with zero latency thru an own (closed) api that shadowplay can use exclusively.

there are some guys reverse engineering this method of capturing because it is mutch more efficient than hooking.
 
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