Your system information

Computer Information:
Manufacturer: Unknown
Model: Unknown
Form Factor: Laptop
No Touch Input Detected

Processor Information:
CPU Vendor: GenuineIntel
CPU Brand: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
CPU Family: 0x6
CPU Model: 0x9e
CPU Stepping: 0x9
CPU Type: 0x0
Speed: 3800 Mhz
8 logical processors
4 physical processors
HyperThreading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported
AES: Supported
AVX: Supported
CMPXCHG16B: Supported
LAHF/SAHF: Supported
PrefetchW: Unsupported

Operating System Version:
Linux Mint 18.3 Sylvia (64 bit)
Kernel Name: Linux
Kernel Version: 4.15.3-041503-generic
X Server Vendor: The X.Org Foundation
X Server Release: 11905000
X Window Manager: Mutter (Muffin)
Steam Runtime Version: steam-runtime-beta-release_2017-10-05

Video Card:
Driver: NVIDIA Corporation GeForce GTX 1050/PCIe/SSE2
Driver Version: 4.6.0 NVIDIA 396.24.02
OpenGL Version: 4.6
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 60 Hz
VendorID: 0x10de
DeviceID: 0x1c8d
Revision Not Detected
Number of Monitors: 1
Number of Logical Video Cards: 1
Primary Display Resolution: 1920 x 1080
Desktop Resolution: 1920 x 1080
Primary Display Size: 13.54" x 7.60" (15.51" diag)
34.4cm x 19.3cm (39.4cm diag)
Primary Bus: PCI Express 16x
Primary VRAM: 4096 MB
Supported MSAA Modes: 2x 4x 8x 16x

Sound card:
Audio device: Realtek ALC233

Memory:
RAM: 7861 Mb

Miscellaneous:
UI Language: English
LANG: tr_TR.UTF-8
Total Hard Disk Space Available: 938771 Mb
Largest Free Hard Disk Block: 95199 Mb
VR Headset: None detected

Recent Failure Reports:

• Steam client version (build number or date): 1528497815 , Jun 8 2018
• Distribution (e.g. Ubuntu): Linux Mint 18.3 Cinnamon - 64 bit
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

When running Talos Principle , if Steam Overlay is on after the elevator part( which the elevator appears on world selection hall ) system hangs in 2 or 3 minutes which as a sign with some stutter right before that happens and cpu load peak ( as i can tell by fan rpm goes up ). If you disable Steam Overlay for that game you can play without a system hangs or crash ( at least it didn't at my 30 minute test , solving puzzles etc )

Also i got Talos.log and Talos.All.log ( which i'm not sure about that All.log is relevant to that though ) which created by game automatically at system hang. Croteam points Talos.log at their Steam Forum section as a repot tool. Ctrl + Alt + F1 is not working at this state , basically only option is power off pc by holding down power button.

Source: https://steamcommunity.com/app/257510/discussions/0/626329820649006245/

This an Nvidia Optimus based laptop which runs with Nvidia Prime , GTX 1050 gpu selected. Other Vulkan apps , like F1 2017 , Rise of The Tomb Raider runs without problems with Steam Overlay on.

Steps for reproducing this issue:

1. Run Talos Principle with either OpenGL selected or Vulkan ( Beta ) selected through 64 bit , because it happens on both API's.
2. Turn Steam Overlay on and off when you reach that elevator part. Until that part , everything works great with SO on.
3. See the problem

PS: Talos.log and Talos.All.log added as an attachment.
Talos.log
Talos.All.log