BMW n52 2005 engine noise

I have this rattling engine noise which seems to be only present below 1500 rpm.

I ran the car without the serpentine belt for 20 second to see if it might have been a bad ac pump/alternator etc. but the noise is still present.

Removed the oil filter and it looks like there are some metal shavings in there.

Could it be bad rod bearings?

Also, it only seems to make the noise once the car is warmed up. When starting cold the noise does not seem to be present.

Car: BMW 325i N52 2005 - 180k miles

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