Not OP but same usage. I either buy the books directly or use Libgen and then, yes, Calibre them over to the Kindle. Every Firestick I've ever owned has becom

Not OP but same usage. I either buy the books directly or use Libgen and then, yes, Calibre them over to the Kindle. Every Firestick I've ever owned has become glacially slow over time and I decided that any Amazon device I purchased would not connect to the internet where possible.