Firstly, it’s a free tool, so don’t expect everything to be perfect, although I do my best to support its stability and development, even for free.
I try to promptly resolve all bugs in the Discord channel. I rarely visit this forum.
I checked the builds again. On my side, everything works fine for UE 5.6 and 5.7.
The issue you described was indeed present in the version 1.x of the plugin, but I fixed it long ago in the new 2.x. Please check your version. At the time of writing this message, the current version is 2.0.5.
If the problem persists in the new version, I’ll need more details: error logs, UE version, and maybe even the minimum version of your UE project so I can reproduce the issue. As soon as I can reproduce it, I usually fix such issues within a couple of days.
Currently, the plugin doesn’t offer traffic generation capabilities. However, traffic is one of the main development priorities for the plugin.
However, here’s what you can do now:
The Pro version of the plugin can generate ZoneGrpah, and in conjunction with CitySample, you can generate traffic. This video (https://www.youtube.com/watch?v=qJNjFzKAm98) has a few seconds of demonstration on how it works.
Roads built with MetaRoad are themselves a very dense road graph. You can export them to any known traffic generation system. However, this will require C++/BP development.
In future releases, I will definitely provide the ability to generate traffic out of the box.