Network issues in Trial of Sekhemas, Trial of Chaos and Vaal Temple

I would like to report a recurring latency issue in Path of Exile 2 that appears to be limited to specific types of content.

Under normal circumstances, the game works perfectly fine for me:

Campaign and regular maps run smoothly

Stable latency around 40–50 ms

No spikes or packet loss

Previously, I completed Trial of Sekhema (3 ascendancies) without any issues.

However, the problem started appearing consistently in the following content:

Trial of Sekhema

Trial of Chaos

Vaal Temple

Whenever I enter any of these areas, my latency spikes dramatically — often jumping from ~50 ms to several hundred, and sometimes even exceeding 1000 ms or more, making the content nearly unplayable.

Important details:

The issue does not occur in maps or campaign areas

Other online games work without any latency problems

My connection has been tested and verified

Sometimes the latency briefly improves after re-entering the area, but the spikes return