Hello. I am also having the same issue. GNS 430 V2 and 530 V2 start slowly and run slowly. Windows 11/P3D5.3HF2.
I have also found that sometimes (not always) I can quicken the startup process by clicking on the "ENT" key located on the front of the GNS unit. The unit will cycle through the startup screens (database versions, etc...) as I click on the "ENT" button.
I would be interested in trying out any beta versions you might need tested.....
Thanks again for a wonderful product.