Thanks a lot for the comprehensive reply.
I have a follow up question: Why is latency not a problem while watching a video on your Smartphone using a bluetooth headset? If I don't have any problems wahtching a movie with a bluetooth headset I don't expect to have any problems while gaming. Whats the difference between watching a movie and gaming?
you can use logseq (opensource) on all your devices and sync the markdown-files with Synology Drive