free routing has just become a wet lettuce

[Simon]

I've used freerouting for a long time but lately it seems to struggle with the simplest of tasks, or rather it will route the board to a point leaving things that are next to each other or in a clear line of sight unrouted.

Has something changed? I am launching it from kicad, does that apply particular settings?

[SiliconWizard]

I haven't used freerouting in years and I thought it was dead. I have an old version of it (the last one the original author released before stopping, I think he had troubles with Zuken or something regarding IP.)

Anyway, just saw that it's still being maintained (didn't know): https://github.com/freerouting/freerouting
I don't know what version you use with KiCad. But if it's a recent version/if it updates from github, then definitely there are commits that date back to 1 month ago.
If you can reproduce the issue with a "minimal" design, maybe you can open a ticket on their github.

[julian1]

The work done in freerouting to support multi-threading was a good performance improvement. There could be a debate about how comparable the output results are with that produced from older code forks. 

[Simon]

Well I ran the same board in the same freerouting but without launching it via the kicad plugin and it worked just fine. I looks like the kicad plugin may be passing some setting that causes an issue.