https://bugs.freedesktop.org/show_bug.cgi?id=104295
--- Comment #1 from kaspar.tint@gmail.com --- I am using Arch Linux with Steam using the operating systems native runtime if this makes any difference.
Some system info also:
phoronix-test-suite system-info
Phoronix Test Suite v7.6.0 System Information
PROCESSOR: Intel Core i5-4570 @ 3.60GHz Core Count: 4 Extensions: SSE 4.2 + AVX2 + AVX + RDRAND + FSGSBASE Cache Size: 6144 KB Microcode: 0x22 Scaling Driver: intel_pstate powersave
GRAPHICS: MSI AMD Radeon RX 470/480/570/580 8192MB Display Driver: modesetting 1.19.1 Monitor: BenQ xl2411t Screen: 1920x1080
MOTHERBOARD: ASUS B85-PLUS Memory: 16384MB Chipset: Intel 4th Gen Core DRAM Network: Realtek RTL8111/8168/8411
DISK: 128GB Samsung SSD 840 + 1000GB Seagate ST1000DM010-2DM1 + 1000GB Seagate ST1000DM003-1CH1 File-System: btrfs Mount Options: relatime rw space_cache ssd subvol=/ subvolid=5 Disk Scheduler: CFQ
OPERATING SYSTEM: Arch rolling Kernel: 4.14.5-1-ARCH (x86_64) Desktop: GNOME Shell 3.26.2 Compiler: GCC 7.2.1 20171128