Hello folks,
I’ve been playing around with the lightning, I enjoy a lot the indirectional lightning in UE4, but it’s killing the shadows. Someone can share a technique or method to keep sharp shadows? 
Have you tried increasing the lightmap resolution of the floor? Do you have a lightmass importance volume in the level? Also have you changed any lightmass related properties in World Settings?
Hey, and thanks for the reply.
Yeah, I’ve changed the bounces in the world settings to 50 and the indirectional light at 30, the light resolution was 32, and now I’ve increased it to 512 and everything is way darker. =) And no, I don’t have lightmass importance volume
EDIT:
Just placed a lightmass imp volume, and get everything on default, light resolution at walls eveywhere is 512, and some weird things started happening
After making one of the lines at 32 light resolutions look what happens
Kinda interesting
Ok, put a lightmass importance volume into the level and make sure it covers the whole area you want to build the lights for. And 50 for bounces is unnecessary really.
Done, removed all the bounses back to default, placed a lightmass importance volume, .etc, but I think I’ve destroyed the poor engine… : ( I’ve been playing with lightning only straight 4 hours, something weird happen again…http://s29.postimg.org/c050gi485/attachment_php_attachmentid_10852_d_1410009094.jpg
Sorry for the offtopic, here let’s get back on the main subject, shadows.
I’ve removed the lamp, and the weird red color was gone, now about the shadow…
When I change lightning value (random) the shadows are fixed in real time, but after I bake they get messed up again,
Here an examples
http://s27.postimg.org/e87dwez69/image.jpg the issue with shadows
http://s27.postimg.org/pylbdsryp/image.jpg I change random value and it get fixxed
http://s27.postimg.org/styeknvyp/image.jpg 3th after clicking bake
Lightning resolution of the walls is 256 all light settings are on default except indirect lightning at 6, that’s it
I forgot to mention that you need to decrease the value for lightmap resolution for brushes. 
If it was 32 by default try 8. The same goes for the walls as well since the boxes cast shadows onto them too.
awww yeah… thanks! Worked, if you have a free minute would love to hear, why at high light resolution that happens
It’s not high resolution; when you decrease the value you actually increase the resolution, and when you increase the value you decrease the resolution. It works like this for brushes only. Static mesh lightmap resolution quality is set as normal(increase value > increase quality, decrease value > decrease quality) So with lower resolutions you have less space to draw the shadows on, and thats why you see a lot of smearing and incorrect shadowing on the surfaces.
Nooow~~~I get it… Without knowing this I was going to have a lot of “bad time” in the future, thanks for the info!