I've been living with a big slow down in farr's launching (about 6s pause, after pressing enter). NO AV or firewalls are involved.
The problem seems to be firefox... when too many tabs are opened. Weird. Could be a plugin, but I don't know which one yet.
At first I thought it was due to RAM cosumption (even if I still got more than 400mb free) : sometimes, when I keep many tabs opened and leave them there for later reading, I can get a lot of open tabs (more than 50...).
But when I tried opening many applications to mimic similar ram consumption, and it does not have this slowdown effect on farr.
Problem unsolved, but controlled. When firefox is kept under control, farr pauses for about 1-2s after pressing enter. That's OK... could be better, but...