How to reproduce:
1. Download attached project file and open "Jitter" Scene
2. Build the game
3. Play built game (notice how smooth sprite moves)
4. Go back to Editor and Enter Play Mode (notice how sprite moves, jitter appears)

Expected result: Simple GameObject should move smoothly in Editor
Actual result: GameObject with simple SpriteRenderer jitters when moving it by a simple script. It's happened only in Editor

Reproduced with: 5.5.5f1, 5.6.4f1, 2017.1.2f1, 2017.2.0f3, 2017.3.0b4