GNS3 VM 2.2.43 on XCP-ng 8.2 seems to be working for me on HP G8 running 2 x Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz.
I havent really used GNS3 much so probably havent found what might be broken other than I cant load xen tools.
I just imported the OVA via XOA and pointed the windows GNS3 at the IP address it picked up.