Technician few times test my modem , Download was 90+ Mbps , Upload was 20 Mbps . He sad that modem is working fine , cos those are max limits of what provider is offering in my area and he was correct on that . Before he left , he sad : "just for sake of it , I will change your modem for new one , to make sure I did all I could for You " . He swap modems , we run tests and they come up with same speeds as before . He told me that the problem must be in my comp . I told him that trough the house I got 3 game desktops , and I like to use from time to time different one to play .Its all depends witch part of the house I'm in , so how possible is that all 3 comps got infected with something and all end up with PING spike ? After he left my house , I start thinking : They all (3 desktops) have in common besides game , Windows 10 and auto updates , and I did install on all of them Firefox browser and some ad blockers on top of that . something must be blocking upcoming data . Il figure Il be working on that next . Im going to start with ad blockers , than maybe after that I move to modify parts of Window Firewall or something . So , what I did next is I disable "AdBlock" , and "ABP" on Firefox , I test once more speed , and than I log in to the game . For 4 hr now I'm playing GW2 . Steady at around 140 PING . No spikes whats so ever , no latency and o ready I join few events with lots of other players and finish those . Eazy Cheezy . Game is running smooth. I doubt that those ad-blocker's got anything to do with it , It was probably modem all the way . To soon for me to say definitely that my problem vanish for good , its only 4 hr I'm playing so far , but I'm optimistic . Bottom line is , I got new modem and game is running good so far . Is it possible that modem can retain top speed but is at fault cos produce those spikes at the same time ? ........possible , maybe , who knows