Certain aircraft diving on approach

[Flic1 977]

Hi - I have been noticing that certain aircraft have very erratic final approaches.  It seems to be the CRJ's 700/900 and A220 from what I have noticed so far.  They tend to drop vertically at different points on 1-2 mile final and usually drop out of the sky to land.  I actually saw a CRJ 900 do a 'Harrier' approach and landing at KLGA this evening..wish I had gotten a video.😄  I just wondered what might causes this...is it the particular model?  I tried removing the AIG versions and seeing if FSLTL was any better but they were not (might even be same model??). I do also have JustFlight Traffic models so maybe I can see if they work any better.  Thanks!

Edited April 19 by Flic1

[kiek 1,220]

No that is not a model issue. It is bad data in RealTraffic.