I'd go for syncthing over nextcloud for your specific usecase. Nextcloud isn't good for unreliable connections and they're sticking with the annoying decision of not supporting server to server synchronization.
I'm just going to assume every billionaire pulling this shit for trump has an unfathomably disgusting record in the Epstein files. There's no way that every single one of them is deciding to be this overtly fucking pathetic.
My CPU was mid range when I bought it five years ago and I use it process a 300gb+ database of price history. My day job is working jupyter notebooks hosted on raspberry pis. Not being able to process a 60000 row database is definitely a skill issue. Bad hardware should encourage good software.