i found a github that allows you run resizable bar as efi script in the UEFI if it have above 4g decoding, which most boards do. However being an asrock board i saw they were one of the first to back port resizable bar to older mobos. i'm ostly just toying around with new and old hardware.
EDIT: https://github.com/xCuri0/ReBarUEFI
EDIT: https://github.com/xCuri0/ReBarUEFI
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