Massive latency spikes in dungeons and open world

Hey! For quite long time im struggling with massive lag spikes ingame (up to 1-2k). It feels like from time to time i connect to some “slow” server.
Re-logging and re-entering dungeons sometimes helps to temporary resolve the problem…

Here is my WinMTR

Host - % Sent Recv Best Avrg Wrst Last
192.168.100.1 - 0 37 37 0 0 9 0
100.123.0.1 - 0 37 37 3 4 15 11
mm-53-80-84-93.dynamic.pppoe.mgts .by - 0 37 37 3 4 15 11
172.23.2.17 - 0 37 37 3 5 7 7
core2.net.belpak .by - 0 37 37 3 7 15 10
ie1.net.belpak .by - 0 37 37 2 6 14 4
asbr1.net.belpak .by - 0 37 37 2 3 27 3
ae58.bar4.Warsaw1.Level3 .net - 0 37 37 13 15 27 16
ae1.3104.edge7.Amsterdam1.level3 .net - 0 37 37 34 39 68 55
BLIZZARD-EN.edge7.Amsterdam1.Level3 .net - 0 37 37 45 50 104 63
ae1-br02-eqam1.as57976 .net - 0 31 31 50 503 4459 245
137.221.65.77 - 0 35 35 45 289 3902 3902
137.221.78.55 - 11 28 25 62 62 74 62
137.221.66.41 - 0 37 37 35 35 38 36
185.60.112.158 - 0 36 36 47 47 50 48

WinMTR v1.00 GPLv2 (original by Appnor MSP - Fully Managed Hosting & Cloud Provider)