Q4os with Trinity desktop really needs little RAM and runs fast even on old devices. The desktop is a bit old-fashioned, but ok. You may also try lighter browsers, perhaps Palemoon.
But 4GB is actually not that little, almost all distros can run well with it, especially rather slim ones like Debian lxqt. maybe it’s really due to the hdd.
Does anyone know if / how well the federation between Iceshrimp and Lemmy works?
-❔ How are posts from Lemmy (with headline + URL) displayed on Iceshrimp?
-❔ Can you find Lemmy posts in Iceshrimp by searching for the URL?
-❔ Can you follow Lemmy communities from Iceshrimp?
-❔ Can you post to Lemmy communities from Iceshrimp?
The first three points work with Sharkey (one of the Misskey/Firefish forks), but unfortunately posting does not.