Massive Latency Spikes

I don't know if this'll help anyone else but it worked for me.

Open Windows Defender Firewall with Advanced Security.

Click on Inbound Rules

New Rule...

What type of rule would you like to create? Program

This Program path: "Navigate to where you have PathOfExile.exe installed"

Allow the connection

When does this rule apply? Select all.

Name? Path of Exile


Repeat for Outbound Rules.

I also switched over to the x64 client. Not sure if I was using it before or not.