When scrubbing through the results on the GPU profiler on Directx12, some corruption causes the graphs to glitch out.

Repro steps:

1. Open attached project
2. Open Sample Scene
3. Have profiler window open and GPU profiler on. I also had CPU and Memory Profiler selected.
4. Press play
5. Switch rendering API to directx12
6. Press play again
6. Try scrubbing through the graphs

Gif provided.

Reproduced in : 2018.2.0a1->2018.2.0b3 and Trunk
Not reproduced in 2018.1.0f2