Low RPM miss?

the Galant is once again becoming g like a problematic stepchild with one little thing after another lately.

Plugs and fuel filter not even 2-3000km old, and recently on a few occasions, at low load levels the car has been misfiring. Once off the line, but usually 1500-2500 rpm gentle accelerate out if a bend type of thing. May happen for up to 10-20 seconds then disappears

I havent been able to identify anything in data logs and stumped as to where to start? My thoughts were if it was pump or ignition it would happen at higher load?

Small boost leak?