Buy some old Intel 10Gbps network adapter, X520, X540 … from AliExpress https://aliexpress.com/, and install old Intel network adapter driver for Windows 10 and make it working in Windows 11. The example is install version 25.0 Intel network adapter driver, https://www.intel.com/content/www/us/en/download/18293/29648/intel-network-adapter-driver-for-windows-10.html, to get it to work in Windows 11:
Intel network adapters supported Operating Systems, https://www.intel.com/content/www/us/en/support/articles/000025890/ethernet-products.html
Buy dual ports 10Gbps network adapter
Install the network adapter in PCIE slot directly to the CPU
Enable SMB Multichannel
Enable Jumbo Frames