I upgraded to the 367.27 driver yesterday and when playing CS:GO my FPS suddenly dropped to ~15 and the game became very laggy and unplayable. I played 4 matches and this happened in 3 of them. The thing that triggered it was when I died or when I was buying stuff at the start of a round, and the only way to fix it was to quit CS:GO and restart it. Reverting to the 361.45.11 seems to fix the problem.
I have also reported this problem to valve here: https://github.com/ValveSoftware/csgo-osx-linux/issues/1116
I have an nVidia GTX-560Ti and I am using Linux kernel 4.4.14 on Slackware64 current with xorg 1.18.3.
Steam system info:
Computer Information: Manufacturer: Unknown Model: Unknown Form Factor: Desktop No Touch Input Detected Processor Information: CPU Vendor: AuthenticAMD CPU Family: 0x15 CPU Model: 0x1 CPU Stepping: 0x2 CPU Type: 0x0 Speed: 3100 Mhz 8 logical processors 8 physical processors HyperThreading: Unsupported FCMOV: Supported SSE2: Supported SSE3: Supported SSSE3: Supported SSE4a: Supported SSE41: Supported SSE42: Supported AES: Supported AVX: Supported CMPXCHG16B: Supported LAHF/SAHF: Supported PrefetchW: Unsupported Network Information: Network Speed: Operating System Version: Linux (64 bit) Kernel Name: Linux Kernel Version: 4.4.14af X Server Vendor: The X.Org Foundation X Server Release: 11803000 X Window Manager: i3 Steam Runtime Version: steam-runtime-beta-release_2016-06-15 Video Card: Driver: NVIDIA Corporation GeForce GTX 560 Ti/PCIe/SSE2 Driver Version: 4.5.0 NVIDIA 367.27 OpenGL Version: 4.5 Desktop Color Depth: 24 bits per pixel Monitor Refresh Rate: 60 Hz VendorID: 0x10de DeviceID: 0x1200 Revision Not Detected Number of Monitors: 2 Number of Video Cards Not Detected Primary Display Resolution: 1920 x 1080 Desktop Resolution: 3360 x 1080 Primary Display Size: 21.77" x 12.17" (24.92" diag) 55.3cm x 30.9cm (63.3cm diag) Primary Bus: PCI Express 16x Primary VRAM: 1024 MB Supported MSAA Modes: 2x 4x 8x 16x Sound card: Audio device: SigmaTel STAC9750,51 Memory: RAM: 15971 Mb Miscellaneous: UI Language: English LANG: en_GB.UTF-8 Microphone: Not set Total Hard Disk Space Available: 831415 Mb Largest Free Hard Disk Block: 128763 Mb VR Headset: None detected