High ping spikes and incorrect ping warning after Season 3 update

I'm having the same issues and tried all the steps listed in OP and Second-DK's post. It's aggravating because every other online game I have works fine. 

I had these issues briefly in S2, but after a weekly update it was fixed. There was also something about a NVIDIA driver update that affected the game. Don't know why, but that seemed to work for the S2 issues. Hasn't worked for S3. 

After S3 update the game is not fun because of this. 

Before S3 update i had none of these problems, and i have been troubleshooting this full time the last couple of days. I am now convinced that the problem is NOT in my end. 

I even bought the game both on Steam and EA App, tried different routers, different PC's and nothing, absolut nothing helps. 

Playing the game, keep get this wierd gameplay with laggy, rubber‑banding and delays that feel like very high ping. DICE Plz!!

• Playing on  Fiber aprox 800-900 mpbs - connected with ethernet cable on a Intel 13700K, 32GB Ram, with RTX 5080. -

Edit: I can confirm that i have did all this too and even some more than that: 

What I already tried:

Restarted router and PC.

Playing only via Ethernet (no Wi‑Fi).

Closed all background apps that might use bandwidth.

Flushed DNS and reset network settings in Windows.

Changed DNS (Google → Cloudflare) as a test.

Verified the game files on Steam.

Enabled the network performance graph in BF6.

Disabled gameplay data sharing / telemetry where possible.

The problem started exactly with the Season 3 update and did not exist before. Other online games on the same PC and connection work fine and have stable ping.

I have exactly the same problem. As do so many others—Reddit has been flooded with posts about these exact issues for the past week. It is absolutely outrageous that DICE hasn't fixed this bug—which renders the game completely unplayable—even after 48 hours. There hasn't even been a single statement from EA or DICE regarding this matter.