• Changed default frequency level to SIMD128 for Skylake, Cannon Lake, Comet Lake and Tiger Lake CPUs.
  This change typically improves performance for renderers that just use SSE by maintaining higher
  CPU frequencies. In case your renderer is AVX optimized you can get higher ray tracing performance
  by configuring the frequency level to simd256 through passing frequency_level=simd256 to rtcNewDevice.