Please Help: Lag while recording/streaming

GangstaRas · April 27, 2016

Hey guys I have a strange issue that I hope someone here can solve. I hope its informative enough for a diagnosis.

My system:

Intel Core i3 3240 @ stock

EVGA GTX 960 SSC @ stock, 364.72 drivers

8GB 1600 MHz DDR3 RAM

ASRock B75M-DGS R2.0 Motherboard

Windows 10 Home 64 bit

About 2 months ago, I used Teamviewer ver. 11.0.56083 and first noticed some horrible lagging that I never had before. Whenever I open the start menu, my mouse would lag like I'm running the desktop at 1 fps, if I close it then the mouse will free up and I would be able to move but whilst running Teamviewer it will happen occasionally no matter if the start menu is open or not. I've provided an example video of what it looks like during recording. In the footage it looks like a computer freeze but in actuality, I'm trying to move the mouse away from the start menu and click outside at those 1 fps speeds.

So I said okay, maybe Teamviewer has some recent update that's causing this. But recently I tried out OBS v0.657b only to be presented with the same issue. How I knew something was horribly wrong was that I had OBS set up from before to record my desktop at 60 fps and I've done numerous tinkering with settings to achieve that. Plus I have this exact same version of OBS on my laptop, set to use QuickSync, same Windows 10 and it has no such issues.

The first thing I noticed was the high CPU usage. With my settings to QuickSync or NVENC I never had such issues so I investigated there first and saw that dwm.exe along with COMODO Firewall were using a lot of CPU power. I uninstalled the firewall leaving me with dwm.exe at 20 - 30% whenever I use OBS or Teamviewer. That CPU usage is normal only when I'm capturing using x264, when I use NVENC or QuickSync, dwm.exe should be at 3 - 6% CPU usage. But even when I use to use x264 and my CPU usage is 70 - 100%, I would never experience lag like this before.

Shadowplay still works perfectly fine however. And the funny thing is, if I have Shadowplay in Shadow mode while I use OBS or Teamviewer, the lagging is completely gone, everything works just like how it should no matter how much CPU dwm.exe is using. So can anyone please help? what's really causing this problem?

The Lag Issue.mp4