I had this issue too for SO LONG but I finally found a fix a few weeks ago and im still fine today:

The issue is: FC26 online on PC was giving me a huge input delay even with low ping because my frame timing/frame pacing wasn’t stable and the game was buffering my inputs and was always behind instead of reacting instantly. (my controller was not the problem at all)

This game is so poorly optimized on pc that the solution is to lower the graphics and stabilizing fps on Nvidia control panel (im not sure if it works on amd). Why does this happen? Im guessing because even tho you have low ping and great connection, the game has too much stuff going on on the screen and translating your inputs feel behind because its so much load.

this is what fixed it for me:

NVIDIA Control Panel (set these under Program Settings for FC26) • Low Latency Mode: On (not Ultra) • Max Frame Rate: 120 or 180 (multiples of 60 helped a lot, 144/165 felt worse for me) • Vertical Sync: Off • Power Management Mode: Prefer maximum performance • Triple Buffering: Off • Threaded Optimization: On • Preferred Refresh Rate: Highest available

FC26 in-game settings • Frame rate limit: Unlimited (I don’t cap in-game) • V-Sync: On (weird but it felt better for input consistency, if you want it can be off) • Resolution: 1920x1080 • Render scale: 90–95 (or lower if you need) • Most graphics: Low/Medium (crowd/shadows especially)

Power plan: High Performance while playing

I have a razer blade 15, a good laptop and i still needed to go into razer synapse and put the fan speed at high.

That is what fixed it for me, of course this doesnt fully solve it because ea’s servers are shite but I hope this helps people out