test network low performance Oracle VirtualBox testing on Simply Linux 10.2 via the Phoronix Test Suite. Intel 82540EM: Processor: Intel Core i3-8100 (4 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 2048MB, Disk: 2199GB VBOX HDD, Graphics: llvmpipe, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Simply Linux 10.2, Kernel: 5.10.198-std-def-alt1 (x86_64), Desktop: Xfce 4.18, Display Server: X Server 1.20.14, OpenGL: 4.5 Mesa 23.1.8 (LLVM 11.0.1 256 bits), Compiler: GCC 10.3.1 20210703, File-System: ext4, Screen Resolution: 958x968, System Layer: Oracle VirtualBox speedtest-cli 2.1.3 Internet Download Speed Mbit/s > Higher Is Better Intel 82540EM . 222.98 |======================================================= speedtest-cli 2.1.3 Internet Upload Speed Mbit/s > Higher Is Better Intel 82540EM . 290.35 |======================================================= speedtest-cli 2.1.3 Internet Latency ms < Lower Is Better Intel 82540EM . 8.984 |========================================================