Thanks for sharing! I can confirm that GPU acceleration on Windows 10 with Nvidia cards is currently broken OR works only sometimes in a quite unstable manner. Just adding my log, though it doesn't contain anything useful. We might have to wait for a driver update.
12:06:40.905; Start: SVPMgr 3.1.7 (72) starts...
12:06:40.906; AppDataPath: C:\ProgramData (ANSI)
12:06:40.907; Start: read settings file settings.ini
12:06:40.909; Start: load language file - English. Duration: 38 ms
12:06:40.947; Start: check Avisynth installed
12:06:40.948; Start: clear Logs folder
12:06:40.951; Start: CPU and threads count detection
CPU: Intel Core i7-4770 @ 3.40GHz [8 threads] (1860)
12:06:40.955; Start: SVPMgr folders prepare. Duration: 12 ms
12:06:40.967; Start: read settings file SVPMgr.ini
12:06:40.969; Start: GPUs settings detection
GPU_11: GeForce GTX 970 (4262)
12:06:40.992; Start: monitors settings detection
Display#00010001: 1920 x 1080 @ 60
12:06:40.995; Start: disable LNG-file write when UAC enabled
12:06:40.996; Start: change SVP-manager priority
12:06:40.997; Start: register hotkeys. Duration: 117 ms
12:06:41.114; Start: get versions of modules used
ffdshow.ax: 1.3.4533
avisynth.dll: Avisynth MT, 2.5.8.6 (SVP edition) (CRC32:5ED58E27)
svpflow1.dll: 2.0.4
svpflow2.dll: 2.0.2
12:06:41.115; Start: refresh autostart state in registry
12:06:41.117; Start: some more work with registry
12:06:41.121; Start: create menu. Duration: 11 ms
12:06:41.132; Start: update settings file settings.ini. Duration: 23 ms
12:06:41.155; Start: prepare "About the program" window. Duration: 47 ms
12:06:41.202; Start: enable ffdShow waiting mode
12:06:41.203; Start: prepare to work is complete
12:06:41.205; RefreshSVP
12:06:41.209; ===== Waiting for ffdshow video
12:06:41.699; ===== Detected playback with ffdShow. AppName: mpc-hc.exe, PID: 888, supports 4GB RAM
12:06:41.805; used avisynth.dll: Avisynth MT, 2.5.8.6 (SVP edition) (CRC32:5ED58E27) from c:\Program Files (x86)\SVP\MPC-HC\
12:06:41.807; GetDimensionAndFPS_fromOSD start. Duration: 124 ms
12:06:41.931; GetDimensionAndFPS_fromOSD result: 1280x720 23.976 1/1
12:06:41.937; T1T: begin. Duration: 886 ms
12:06:42.823; screen settings refinement: Display#00010001: 1920 x 1080 @ 60.001
12:06:42.826; T1T: GetAllMediaParams
12:06:42.828; ### CorrectStereoModeByAppAndFilename: file.mp4
12:06:42.830; T1T: SettingsPrepare
12:06:42.835; T1T: Preparing smooth playback...
12:06:42.839; T1T: WriteAllMediaParamsToIni
12:06:42.841; SVPMgr: play "C:\ProgramData\SVP 3.1\" avs x86. Duration: 175 ms
12:06:43.016; Selected profile: 1280x720@24. Duration: 16 ms
12:06:43.032; ===== Playback
23.976 * (5 : 2) = 59.94 fps
12:06:43.035; SetPriorityPlayer: 2