Last few years? Its only the last few months this has occurred and the "Help" always makes out its a problem on the User's end, my cache is only cleared once every 6 months and I have no packet loss at all. It doesn't matter the size of the sim or how many people are in it, they all load just as slow no matter how empty or small it is and the fact others here have just mentioned they are experiencing the same sort of problems, you are going to tell them it's their end problem too?
It's just a full on slowdown on Second Life's end, I keep up to date with the SL Viewer and it gradually seems to worsen with each update that is released for it, I literally went to sleep after SL was working fine and woke up the next day with this terrible speed and it hasn't changed since then and what Rachel said up above also happens to me, simple huds on screen that take up hardly any data or textures take a long time to load, let alone the sim objects and avatars.
End of the day, I keep my cache for everything long enough, so when I return on SL it should have better loading times to the places I already have been to but thats not the case at all. I'm not usually one for throwing hate but the fact the "Help" here has an excuse for every answer available even though people have explained what has already been done and checked to prove the issue is kind of non professional, that and they always come to an end solution its the users end having problems.
Plus my speed should be fine without pocket loss: