4.23 freezes while baking lights

anonymous_user_881010e3 · September 5, 2019, 5:17pm

Hi,

We’ve installed UE 4.23 today but have found the editor freezes during a light bake. The bake completes and the editor comes back to life, but until then it’s completely unresponsive with no indication of progress. We’re used to the bake running in the background.

Things we’ve tried;

Have checked firewall settings.
Have checked to see if this happens if opening up an empty scene and adding a couple of cubes (it does).
Reinstalled and verified the engine.
Checked if this happens on another machine in the same office (it does).

Would be good to know if anyone else is experiencing the same issue and/or if they know of a fix.

Thanks.

anonymous_user_881010e3 · September 9, 2019, 9:55am

Could anyone confirm that they’re not seeing this behaviour?

anonymous_user_16477b51 · September 9, 2019, 10:44am

Same here. I was force-closing the editor at first because I thought there was an error.

anonymous_user_881010e3 · September 10, 2019, 7:54pm

Thanks! Good to know it’s not just us, I’ve still not found a solution, haven’t tested it fully but it also seems to freeze any other open UE editor window even if it’s a different project.

srogee · September 11, 2019, 1:54am

Also seeing the same behavior.

MadMaximus · September 13, 2019, 12:37am

Experiencing the same issue. Works fine in other (older) engine versions though.

AndrewVal · September 14, 2019, 8:12am

The same issue. Everytime when I build lightmaps, main editor window freezes until swarm agent done his work.

alxgmv · September 20, 2019, 7:01am

I’ve got the same issue

srogee · September 22, 2019, 10:39pm

I think I found a workaround - when you click Build Lighting Only it works like it did before and lets you use the editor while it’s building lighting.

anonymous_user_881010e3 · September 23, 2019, 8:31am

thanks, that’s definitely an option.

anonymous_user_881010e3 · September 23, 2019, 8:33am

After digging around with my local UE community i’m aware this is a known issue, fix should be on the way.

RED_X_Strike · September 28, 2019, 10:44pm

Same. Essentially it freezes when on the ‘Build Status’ pop up. Swarm is still running, however.

Anyone using Substance? curious if that could be a root? Just thinking. Otherwise, I’m not sure what’s going on.

anonymous_user_96ebc0c6 · October 4, 2019, 1:25pm

Oct 4 and my team and I are still having the same issues with the freezing after clicking on build and then the program coming back. Any solutions yet?

srogee · October 4, 2019, 2:14pm

Try using Build → Build Lighting Only instead.

Hardus96 · October 21, 2019, 1:25pm

Still having this issue? I am.