2012 Passat 2.5l chug
 

2012 Passat SEL 2.5l 134,000 miles
Speeds less than 30 mph
RPM less than 1400
During slow acceleration car chugs or feels like something is slipping or missing. It might seem like it is looking for a different gear but not necessarily feeling like the transmission. No dash lights or codes showing.
Any help appreciate. Thanks