Is this a known issue? The following on a clean image of Windows Server 2016:
- Download the latest Win x64 grin from https://github.com/mimblewimble/grin/releases.
- Install Visual C++ Redistributable for Visual Studio 2015 (required to run the .exe).
- Run grin.exe. CPU usage pegged at 99%, bandwidth usage very low, only download 14 days of headers in 6 hours.
- Close grin.exe by pressing Q. Re-open grin.exe, CPU usage down to 12%, download 14 days of headers in a minute.