I'm submitting a...

[ ] Regression 
[x] Bug report  
[ ] Feature request

I'm using these versions

• Windows Edition: Windows 10 Enterprise
• Windows Version: 1803
• Windows OS build: 17134.345
• Dopamine version: 1.5.14 (Release)
• NVIDIA Driver version: 416.34
• Graphics Card: GTX 1060
• G-SYNC montior: Dell S2716DG

Reproduction steps

• Step 1: Enable G-SYNC in the NVIDIA Control Panel for both windowed and full screen mode.
• Step 2: Use Dopamine
• Step 3: Observe very low FPS (~20 frame per second)

Observed behavior

Dopamine has extremely low FPS when the NVIDIA control panel is set to use G-SYNC for windowed applications.

When set to "Enable G-SYNC for full screen mode", Dopamine runs at 144+ FPS.
When set to "Enable G-SYNC for windowed and full screen mode", Dopamine runs at ~20 FPS.

Desired behavior

Dopamine should have the same FPS as all other applications when the NVIDIA control panel is set to use G-SYNC for windowed applications.

Log file