Is Index Exchange's Header Bidding just having a Monday?

Hey everyone! Dealing with a bit of a head-scratcher with Index Exchange lately and hoping someone here has seen this before. My header bidding setup seems to be throwing a digital tantrum, and I'm not sure if it's me or the platform.

• Background: We've been running Index Exchange alongside other SSPs for a while, mostly stable. Recently, we've noticed a significant drop in bid rates and increased latency specifically from IX.
• The Problem: Our ad server logs show IX bids coming in super late, often after the timeout, or sometimes not at all. This is leading to lower fill rates and revenue dips from that specific partner. It's like they're having a coffee break mid-auction.
• What I've Tried:
  • Checked our prebid.js configuration for any recent changes – none.
  • Increased the timeout for IX specifically – no real improvement, just later losing bids.
  • Monitored network traffic (HAR files) to see bid requests/responses – they seem to be sent, but responses are either delayed or empty.
  • Cross-referenced with other SSPs – they're performing normally.
  • Reached out to IX support – standard troubleshooting steps, but no breakthrough yet.
• Observations/Weirdness: Sometimes we see a cryptic error in the browser console related to IX's adapter, though it's intermittent.
• Dummy Console Log Example:

  [Prebid.js] WARN: Bidder 'indexExchange' did not respond within timeout (2000ms).
  [IndexExchange] ERROR: Failed to process bid response: malformed data.
  [Prebid.js] INFO: No bids returned for ad unit 'ad-slot-123'.

• My Question: Has anyone experienced similar issues with Index Exchange's header bidding performance recently? Are there specific parameters or configurations I should be double-checking that might cause this kind of latency or bid failure? Any secret handshake I'm missing?
• Closing: Appreciate any insights or tips you might have! Thanks in advance!