So I tested over the last couple of weeks running on a VMWare ESXi 7 host. It's running on an old HP Proliant DL380 G7 (Xeon 5600 series, dual 6 cores, 12-threads CPU, with 32GB RAM, and 6 x 1Gbe interfaces. The 'WAN' side was connected to a Cogent 1Gbit Fiber DIA. Tests were done after hours...