[BUG] FC26 Co-op severe lag/desync when PC plays with PS5 — works fine on FC25

Hey everyone, I'm experiencing a serious co-op lag issue in FC26 and wanted to know if anyone else has the same problem.

Setup: I'm on PC (ASUS ROG Ally) and my friend is on PS5. We play co-op together in Ultimate Team and Co-op Seasons.

Issue: My screen is consistently 10-15 seconds behind my friend's. On his screen the game is ahead, and any input I make takes 10+ seconds to register. Completely unplayable.

What I've tried: Different VPN servers, Wi-Fi optimizations, power settings, closing background apps — nothing works.

Key detail: We play FC25 together all the time with zero issues. The lag only happens in FC26, same two players, same devices, same network. This tells me it's a FC26-specific crossplay/netcode bug between PC and PS5.

Has anyone found a fix? Is EA aware of this? Would appreciate any help.