MASSIVE latency spikes in random areas and instances

Such ping / latency numbers have been a mainstay in my experience throughout the entire 3.27 update.

Nearly every zone has these areas where merely just standing in the wrong spot spikes my latency to the 10's of thousands. If I move few steps back, the latency drops back to ~40-50.
Most notably it happens near the edges of the Breach league mechanic. Once I clear the breach, the latency goes back to normal... most of the time at least.

The latency is at its worst in areas where it's a tight corridor, as I have only one direction to go, and if there's a spot in that corridor where the latency jumps to the sky, I can't progress in the game at all.
I've had near literal softlocks in Act 6, I managed to get through by just running through the lag zones with quicksilver and frostblink ignoring all the mobs and hoping for the best.

Currently I can only play the game on predictive networking mode as it doesn't immediately throw me out of the game, but it's a fairly demoralizing experience dying constantly when the game just freezes up on me as the latency starts hiking up by just standing in the wrong spot.
I had this same problem with Settlers league as well, where the ore vein encounters massively increased latency to the point of being unplayable, although it got better towards the end of the league and I don't remember having issues in Phrecia.

the same thing happens for PlayStation 4. it never happened like that before.

Sadly the same for me since Saturday evening. I can't progress, since I get these spike all the time.

same thing here. I thought I was the only one. I can't seem to make sense of what's going on. breach is killing my instances and I can't progress when this happens. I kept going hoping this problem will go away but it didn't and now out of maps. please help

I experienced exactly then same thing you described, since the league launch on friday. Never had any problems like this before.

Sunday evening US time was impossible to play. even in town (Sarn) it was impossible to sort through items in the chest. Random lag spikes and disconnects.

Same issues here, got somewhat playable yesterday 10pm-12am but now cant even clear a single pack without getting disconnected due to latency spikes. Have tried all North American servers and getting the same result. These latency issues are not seen in other applications and no issues are being reported by my ISP.

Something must've been updated, was able to play an entire day without a single latency spike or disconnect. Keep up the hard work GGG