Guild Wars 2

From time to time ( i think from the last patch) i have the problem that mobs on events in orr for example load half way or load slower. I know they are there and other ppl tend to hit them before i can even see them. Its not only me that have the same prob.

I have an:
i7-3770
Hd7850 sapphire oc
Sdd agility 4 (system +guild wars on it)
4gb of ram (1 4gb stick died and ill have it back )’
P8 z77 m motherboard.

My fps wont drop lower then 40 on thoes events + on wvw i dont have problems with loading 100+ ppl so why there is a problem with loading 20 + on events s ? ( seems ppl tend to disappear somtimes as well and when i move my camera around they are on again.) Im not sure if that was the problem before but i think it strarted recently.

My current 4gb ram is fine tested with memtest for over 12h+ same with cpu and gpu.
I think i should see mobs instantly with this setup where there is not even 30 ppl around. Somtimes i see them spawn correctly when im looking in the direction of spawn from some locations.

Bump. Anyone have this as well ? Im not sure if i should try to mess with my cpu, get more lag etc but considering im getting this from the last patch ( it was rly rare for mobs not to load instantly before) i think its on the server side. I even oced my cpu to 4.3 ghz but i didnt change anything beside adding 2-3 extra fps which was not a prob to being with.