Hello @NukeThief
It is not only about performance, but also because the security architecture of the processors. In this case most of pre-Gen8 Intel have been classified as "Not Recommended" or not supported, because of lack of Secure Boot or TPM compatibility.
You can see other ways to install Windows 11, including the bypass of TPM check during the installation process: https://support.microsoft.com/en-us/windows/ways-to-install-windows-11-e0edbbfb-cfc5-4011-868b-2ce77ac7c70e
And also general information about Microsoft statement on installing on not recommended devices:
https://support.microsoft.com/en-us/windows/installing-windows-11-on-devices-that-don-t-meet-minimum-system-requirements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1
Hope this helps with your query,
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