Hey Xeroize494 -
Try adding the following into your [Install Location]\Unreal Engine\4.3\Engine\Config\BaseEditorGameAgnostic.ini:
[EngineBenchmarkResult]
Valid=true
ResolutionQuality=100
ViewDistanceQuality=1
AntiAliasingQuality=1
ShadowQuality=1
PostProcessQuality=1
TextureQuality=1
EffectsQuality=1
Let me know if this fixes the issue for you.
Thank You -
Eric Ketchum