INPUT LAG ON HIGH END SUPER PC… HELP!!

[ikizmet]

I searched forums, threads, YouTube videos, websites, everything under the sun. I’ve done OBS detailed diagnostics (run my stream for 30 seconds and open the page)… when I don’t have OBS open everything runs smooth. Below are my specs and everything else. I play APEX LEGENDS with controller (Razer Wolverine Ultimate) and I play at 1440p res NO SCALING option selected via control panel. V-sync off, adaptive sync off, g-sync off. Tried unlimited frames in game, tried capping frame rate 1 below 270hz, and tried capping frame rate to 240. I only every notice input lag when obs is open.

OS: Windows 11
CPU: i9 12900k
GPU: RTX ASUS TUF 3090
RAM: Trident 32GB (16x2) DDR5
Storage: 3 M.2 Samsung evo SSDs

MONITOR: ACER Predator 27inch 270hz 1440p
I run OBS at 60 fps (base canvas 2560x1440p) (output 720p) I don’t do any recording. My webcam is a Logitech Brio and I run that at 720p 30fps

Internet: LAN connected (1400 download/ 45 upload)
Bitrate: video 4000 (audio: 328 or whatever the max audio bitrate is).
Encoder: NVENC (low latency performance)
Max B frames: 1
The other setting is set to 2
Look ahead and visual tuning are off

PLEASE HELP ME!! It’s driving me nuts. My PC is a beast no way I should be having this issue. It has to be some stupid setting I have wrong or have missed.

 

[ZeDfriT]

I have similar pc.. Play CSGO at 500-600 fps .. when open the OBS drop to 120-170. Incredible

 

[rockbottom]

Storage: 3 M.2 Samsung evo SSDs

Installed where?

I'm also on a Z690, if all (3) NVMe's are installed in the mobo or if the wrong slot is used, PCI-e bus interface may only be operating @ x8 4.0....

 

[rockbottom]

Using my board (Asus ROG Maximus) as a example:

M.2_1 shares the 16 PCIe 5.0 lanes with GPU - don't use it. This is would only useful if you have a PCIe 5.0 SSD of which none currently exist.
M.2_2 has 4 dedicated PCIe 4.0 lanes direct to CPU that are not shared with anything. Use this one for your main/OS SSD as it has the best performance.
M.2_3 uses the PCH so shares it's 8 PCIe 4.0 DMI lanes with everything else on the chipset, 10G lan, 2.5G lan, USB, Thunderbolt, wi-fi, bluetooth and the ROG DIMM.2 SSDs. If you use a lot at once it will slow down, but not as much as past generations due to increased DMI bandwidth.
ROG DIMM.2 M.2_1 shares PCH with M.2_3.
ROG DIMM.2 M.2_2 again shares PCH DMI bandwidth.

 

[ikizmet]

Using my board (Asus ROG Maximus) as a example:

M.2_1 shares the 16 PCIe 5.0 lanes with GPU - don't use it. This is would only useful if you have a PCIe 5.0 SSD of which none currently exist.
M.2_2 has 4 dedicated PCIe 4.0 lanes direct to CPU that are not shared with anything. Use this one for your main/OS SSD as it has the best performance.
M.2_3 uses the PCH so shares it's 8 PCIe 4.0 DMI lanes with everything else on the chipset, 10G lan, 2.5G lan, USB, Thunderbolt, wi-fi, bluetooth and the ROG DIMM.2 SSDs. If you use a lot at once it will slow down, but not as much as past generations due to increased DMI bandwidth.
ROG DIMM.2 M.2_1 shares PCH with M.2_3.
ROG DIMM.2 M.2_2 again shares PCH DMI bandwidth.

I’m going to look into this and actually determine

 

[ikizmet]

I have similar pc.. Play CSGO at 500-600 fps .. when open the OBS drop to 120-170. Incredible

It’s actually really really annoying lol. But what the gentleman said below might actually do it because I’ve tried everything else

 

[rockbottom]

You can check the bus interface with GPU-Z.

 

[rockbottom]

If it's @ x8 4.0, I would move (2) of the NVMe's to a PCI-e expansion card. My son's E-Gaming mobo came with the expansion card & that's where I installed his 2nd & 3rd drives.

 

[rockbottom]

Check out the difference in Performance. This is my PC benchmarked with the Bus Interface @ x8 4.0 & @ x16 4.0.

12900k/3090FE no OC