Disable Active State Power Management
On the 12th and 13th gen computers (or earlier as well) access to PCI may be delayed due to the PCI Express Active State Power Management (ASPM). On some systems, it may be possible to disable it from the UEFI setup. On some systems it may not. In that case, it is possible to disable it from Linux (if using the RTOSVisor), following these instructions: https://wireless.wiki.kernel.org/en/users/documentation/aspm, in the "Enabling ASPM with setpci" section.