Loading screen freezing?

[Zaratus]

To the security/defense program:
If you were using one, it might have been that heRO asks occasionally (for whatever reason) for some rights on changing maps that you would have to approve. Since you're in fullscreen though, you can't see heRO asking for rights and therefore can't approve them thus heRO can't do anything anymore and you're totally stuck.
Since you don't use any (except avast which only scans for viruses and doesn't check processes, at least from what I remember from my avast), this option is pretty improbable.

Listen to your cooler fan, does it speed up before changing maps? Running SpeedFan with logging the temperature helps if you are unsure. Might be an overheating problem since new map loading is quite work intensive.

Try doing the map change without wings and check if heRO dies anyways. Helped for Menti quite often.

I'm quite sure you tried reinstalling RO with the latest Ragray already, yeh?