If we compare the last major release of Mono back in 2019, where there was a real improvement to the CLR (not just bug and security fixes), with the CoreCLR ver

If we compare the last major release of Mono back in 2019, where there was a real improvement to the CLR (not just bug and security fixes), with the CoreCLR versions at that time, the factor is rather 1.1 (see e.g. https://www.quora.com/Is-the-Mono-CLR-really-slower-than-CoreCLR/answer/Rochus-Keller https://www.quora.com/Is-the-Mono-CLR-really-slower-than-Cor...).