Upgraded my ram, CPU was still a ways out but I maxed the speed anyway.
System kept locking up during games, couldn’t pin down why, ended up destroying the graphics drivers trying to fix it and eventually got frustrated enough to start fresh.
Turns out I exceeded the max ram speed my CPU supported (was running 3600hz on a Ryzen 2600…) Switched it back and everything went back to normal.
Sorry for the unwarranted input but like you I tried FlorisBoard and it was awful and to me seems like a dead project. Since then I went with a fork of OpenBoard and it even has gesture typing similar to that of Gboard! If that’s important to you of course
Anecdotal, but when I was just messing with qBittorrent and its search feature, I found some ROM sets just by searching for system and sorting by size. This torrent for example is not necessarily comprehensive but contains a lot of roms of which can be shared with friends and family :)