Hey everyone,

Not sure if anyone had this issue, but our game was released as demo on steam, and some players have reported some lags, on spec that should be more than sufficient to play the game.
Could this be engine / driver related ?

Time of this report: 5/27/2026, 15:25:15
Machine name: MSI
Machine Id: {9D19FE3F-426B-486F-998A-97979AA70DCF}
Operating System: Windows 11 Home 64-bit (10.0, Build 22631) (22621.ni_release.220506-1250)
Language: English (Regional Setting: English)
System Manufacturer: Micro-Star International Co., Ltd.
System Model: Bravo 17 D7VFKP
BIOS: E17LNAMS.314 (type: UEFI)
Processor: AMD Ryzen 9 7940HS w/ Radeon 780M Graphics (16 CPUs), ~4.0GHz
Memory: 16384MB RAM
Available OS Memory: 15548MB RAM
Page File: 10862MB used, 17484MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 120 DPI (125 percent)
DWM DPI Scaling: UnKnown
Miracast: Not Available
Microsoft Graphics Hybrid: Not Supported
DirectX Database Version: 1.8.3
DxDiag Version: 10.00.22621.3527 64bit Unicode

Card name: NVIDIA GeForce RTX 4060 Laptop GPU
Manufacturer: NVIDIA
Chip type: NVIDIA GeForce RTX 4060 Laptop GPU
DAC type: Integrated RAMDAC
Device Type: Full Device
Device Key: Enum\PCI\VEN_10DE&DEV_28A0&SUBSYS_13DE1462&REV_A1
Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER]
Device Problem Code: No Problem
Driver Problem Code: Unknown
Display Memory: 15729 MB
Dedicated Memory: 7956 MB
Shared Memory: 7773 MB

The engine might be choosing the IGPU and will use AMD.
AMD does have a weird issue at times if you render 2D only it might get stuck in 2D clock speeds unless you do a forced simple 3D cube render then do a screen clear and render over it.

not sure how NVidia acts in this way.
but from what I saw on the discussion board reporting this, I don't really see 'lag' or performance issue but a 'delay' and 'slowness' which might be due to mouse acceleration and all kinds of different issues. They might be running external frame capping software which might mess with how the engine works.

As for the engine side of things: should not be the case. But hard to tell without more information.

If the users reporting the lag are using Windows, they could add your game exe to the Graphics settings and set the mode to High Performance.

I get lags only if VRAM usage exceeds available GPU memory.

check
long MemUsageGPU()
{
return
+Renderer.memUsageGPU()
+CachesMemUsageGPU();
// +your own custom generated Mesh and Image .memUsageGPU();
}

(09-30-2026 06:43 PM)Zervox Wrote:  but from what I saw on the discussion board reporting this, I don't really see 'lag' or performance issue but a 'delay' and 'slowness' which might be due to mouse acceleration and all kinds of different issues. They might be running external frame capping software which might mess with how the engine works.

Yes that's actually closer to what is happening, where the player almost has a constant delay.

thanks to everyone pitching in !

The player actually followed the instructions and found out that nvidea had picked the IGPU as the default GPU instead of the 4060 ! works great now

Quick fix for this: