Fighting is horrible, when connected to the internet

i have switched off my wlan. Now i have lovely fights with Bernard. Why Fighting in KCD turns horrible when connected???

Do you loading updates from the internet? Or do you mining?

i have DSL 100.000 (on my village woot! woot!). i don’t mine active. Maybe the distance. Or Ddos attacks. although my connection is stable. my ping is high (still green). ie in WoW other players have a latency of 29, while i had a constant latency of 129. with that latency, boss fights and pvp were horrible (melee fighters hitting me from far when i tried to run away, or if it was necessary to run away from boss attack, he always hit me). MS Defender and Avira AV pro running simultanously (at my WoW time Defender was disabled)
Maybe the CPU? My computer had an heat break half a year ago. water cooler and graphics card burned out. New CPU ordered already, cause before the heat break i was able to play on HIGH, currently with new cooler and graphics card on LOW as graphics are also calculated on the CPU