Some benchmarks will reset all user preferences to default when you run them.
These ones have the issue:
ClothSim Benchmark.bat
GPU Benchmark.bat
Hair Benchmark.bat
HairRender Benchmark.bat
HairSim Benchmark.bat - This one also doesn't seem to render any hair?
These ones seem to work properly:
Baseline Benchmark.bat
CPU Benchmark.bat
CPU High Physics Benchmark.bat
Crypt Benchmark.bat
These ones have the issue:
ClothSim Benchmark.bat
GPU Benchmark.bat
Hair Benchmark.bat
HairRender Benchmark.bat
HairSim Benchmark.bat - This one also doesn't seem to render any hair?
These ones seem to work properly:
Baseline Benchmark.bat
CPU Benchmark.bat
CPU High Physics Benchmark.bat
Crypt Benchmark.bat