This is a work in progress. You will need to apply them by hand/ssh to your own /home/user/.mozilla/microb/prefs.js

It's mostly about slowing down the rendering engine and improving the efficiency of the network connections on such a slow device. It seems quicker to me, but I don't have a large sample to use for comparison.

#changed
user_pref("browser.cache.memory.capacity", 8192);
#added
user_pref("browser.sessionhistory.max_entries", 4);
user_pref("nglayout.initialpaint.delay",2000);
user_pref("content.notify.interval", 1250000);
user_pref("content.notify.ontimer", true);
user_pref("network.http.pipelining", true);
user_pref("network.http.pipelining.maxrequests", 1000);
user_pref("network.http.max-connections", 4);
user_pref("network.http.max-connections-per-server", 4);
user_pref("network.http.max-persistent-connections-per-server", 1);