PING spike in map instances (campain runs fine)

Hello,

what is the reason of getting the huge ping spikes?

I followed the guide here: https://www.pathofexile.com/forum/view-thread/1377789

Result:
https://imgur.com/a/xoM9A3D

Similar issue was reported also here:
https://www.pathofexile.com/forum/view-thread/3347104/page/1

Best fix was inf this forum to go to moskow gateway? Currently I am also switching between gateways. But this can not be the solution?

Is there any other advise?


Thanks for any help.