Bug Report [FIX] Frame Drop When Game Window Focuses

[DarkSwordsman]

Found a fix (I think full fix, the rest may be dependent on processing power) for the frames dropping when you focus in a game window.

*** NOTE: This was originally with SLOBS, but it appears to be the same exact issue with regular OBS in 32 and 64 bit ***

I am in OBS version 20.0.1 and SLOBS version 0.8.8.

I was previously getting about 35-40 FPS on a 720p60 @ 6000 Kbps stream even when not encoding and on the start screen of PUBG. PUBG didn't suffer performance-wise, but the stream did. It was only when I focused on the game window. Even if I had no game source or any source with the game in it, it still lowered the FPS.

Nothing seemed to work until I tried the following (personal settings are below):

1. Go to Settings > Output in SLOBS
2. Change Output Mode from Simple to Advanced
3. Set your desired bitrate and encoding
4. Change Profile to Main

I noticed that a setting seemed missing from OBS, and it was that main preset. When you turn on advanced settings (which was never a thing before) it is set to None instead of the old Main preset.

From here, my 720p60 stream at 6000 Kbps went from 40ish fps in an idle game to a full 60 fps while in game with action.

1080p30 6000 Kbps is flawless. 1080p60 6000 Kbps slows down to about 55-60, but still holds up well for the most part.

My in-game settings? Low preset at 1080p. I have a 144 hz monitor just for reference. Game still ran at a solid 90-95 fps as if I weren't even streaming without any hiccups or anything.

NOTE: The only downside seems to be the browser source tipjar. Doesn't like it and still drops to about 40-50 on 720p60 and 25ish on 720p30.

Here is a list of my (relevant) Output "Streaming" settings:

• Output Mode - Advanced
• Encoder - Software (x264)
• Rate Control - CBR
• Bitrate - 6000
• Keyframe interval - 0
• CPU Usage Preset - veryfast
• Profile - main
• Tune - (None)
• x264 Options -

Here is a list of my (relevant) Video settings:

• Base (Canvas) Resolution - 1920x1080
• Output (Scaled) Resolution - 1920x1080
• Downscale Filter - Bilinear
• FPS Type - Common FPS Values
• Common FPS Value - 60

My PC Specs:

• i7-2600k @ 4.508 Ghz
• Gigabyte G1 GTX 970

Again, the tipjar is a pain in the butt, but if you can get it working, kudos.

I will note: This appears to be a simple Windows issue. Someone mentioned something about GPU priority built into Windows. I don't see how setting the profile to main would fix that, but it works great for me and seems to be the only useful fix.

 

[ChriskyBusiness]

Well mate, sounds like something similar that was happening to me, and it happened because I was running PUBG in borderless windowed instead of full-screen. However, whilst my stream was smooth my game still lagged when I played. What I did was I dropped my monitor refresh rate to 60hz instead of 144hz and BAM I could stream every game flawlessly.

 

[DarkSwordsman]

Well mate, sounds like something similar that was happening to me, and it happened because I was running PUBG in borderless windowed instead of full-screen. However, whilst my stream was smooth my game still lagged when I played. What I did was I dropped my monitor refresh rate to 60hz instead of 144hz and BAM I could stream every game flawlessly.

I was thinking of doing that but I would rather not like to manually change my refresh rate every time I play PUBG.

I am noticing, however, that I am badly missing frames. I could try lowering the bitrate, but from my understanding, a 2600k should be able to handle 1080p60 6000 pretty easily. I'll report back. Worse comes to worst, I could just do 720p60.

 

[DarkSwordsman]

I found something regarding registry value for GPU priority under this MSDN article. Will try editing and see a difference: https://msdn.microsoft.com/en-us/library/windows/desktop/ms684247(v=vs.85).aspx

There's also some here that I may take a look at, which may help, but may not solve the actual issue: https://www.reddit.com/r/killerinst...xcellent_guide_to_optimizing_your_windows_10/

Like [AFK] Pyro said on the SLOBS Discord, don't change registry values unless you know what you're doing and/or can afford to possibly ruin your OS. I can easily reinstall without any consequence so I'm okay with being a guinea pig.