Comment 2 for bug 578774

System: Host: CRAIG-DELL Kernel: 4.4.0-64-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.2.7 (Gtk 3.18.9-1ubuntu3.1) dm: mdm Distro: Linux Mint 18.1 Serena
Machine: Mobo: Dell model: Dell Precision M3800 v: A09 Bios: Dell v: A09 date: 01/08/2015
CPU: Quad core Intel Core i7-4712HQ (-HT-MCP-) cache: 6144 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 18357
           clock speeds: min/max: 800/3300 MHz 1: 2743 MHz 2: 2328 MHz 3: 2376 MHz 4: 2319 MHz
           5: 2405 MHz 6: 2300 MHz 7: 2325 MHz 8: 2704 MHz
Graphics: Card-1: Intel 4th Gen Core Processor Integrated Graphics Controller
           bus-ID: 00:02.0 chip-ID: 8086:0416
           Card-2: NVIDIA GK107GLM [Quadro K1100M] bus-ID: 02:00.0 chip-ID: 10de:0ff6
           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa) FAILED: nouveau
           Resolution: 3840x2160@60.00hz
           GLX Renderer: Mesa DRI Intel Haswell Mobile GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes

Video stuttering in Totem, VLC and slightly better in MPV. This is playing local mpeg (4K) files on Intel GPU at full screen via displayPort output. nVidia GPU is unusable. Very disappointing.

A year ago, it was all ok.