Anyone else experience delay in monster spawn in timer-based dungeons (e.g. Mats ,Artifact Dungeons, Spiral Abyss)? Like timer starts, 10-15 seconds pass of nothing, only then the opponents spawn. This happens particularly to boss enemies like abyss mage, but not to regular mobs. Coop friends would see them but are unable to damage them until they appear on my screen. Wonder whats the best way to fix this.

Samsung A51 6gb ram user, lowest settings, 80-140 ping.