Pixel 9 Pro XL won't fast charge (Even using Official Google 45W Charger)

It would randomly start fast charging for some minutes then go back to normal charging. At nights it would fast charge a bit longer. Turning off Adaptive Charging doesn't help.

Turning the phone off and on again would make it fast charge again for 5-10 minutes then it would go back to normal charging again.

Sometimes it fast charges till the end, not all the times. This is frustrating to be honest especially when you have to leave in 30 minutes and you see your phone only charged from 10% to 50%.

Specifically bought Google 45W charger just for this but it doesn't even matter.

Using Android 15 Stable - No lint or debris in port.

WTH Google?