Reproduction steps for Editor:

1. Open "MinimalRepro.zip" project
2. Enter Play mode
3. See that the game is stuttering
4. Double Left Click
5. Click on "Vsync Count"
6. See that the game is now smooth, but a stutter sometimes occurs
7. Set the "Vsync Count" to '0' and the "TargetFPS" to '60'
8. See that the game is smooth, but a stutter sometimes occurs
9. Click on "Vsync Count"
10. See that the game is smooth, but a stutter sometimes occurs

Expected Result: Game view shouldn't stutter
Actual Result: Game view stutters when: 30FPS VSync on, 60FPS VSync off and on

Reproduction steps for Standalone Player:

1. Build and launch the project
2. See that the game is stuttering
3. Double Left Click
4. Set the "TargetFPS" to '60'
5. See that the game is smooth, but a stutter sometimes occurs

Expected Result: Game shouldn't stutter
Actual Result: Game stutters when: 60FPS VSync off

Reproduced with: 2018.3.0a1, 2018.2.0b6, 2018.1.2f1, 2017.4.4f1, 2017.3.2f1, 2017.2.3f1, 2017.1.4f1