Last night I was able to grab the vbios and I was attempting to use it but it didn't help. With the fsync kernel on the testing branch supporting the acs override, the iommu layout isn't really an issue here now. Thanks though!
@EyeCantCU thanks for merging that PR btw... i just made another one because i did a test of installing every single flatpak in the bazzite portal and seeing how much storage it took (~15GB) and if they had EOL runtimes. Parsec and Stella did, but I only opened to remove Stella since it seems to be unmaintained. Parsec developers are aware of the EOL runtime