Bug MSAA - Light leaking through edge of mesh

Hello,
I'm experiencing some odd lighting artifacts when viewing an edge at a steep angle. The wall and the floor are part of the same mesh. the wall's thickness is atleast 0.5m. Attached is a gif of the issue.

Here are my settings for shadows:


Any ideas what might be causing this? I've tried higher resolution lightmaps, lower/higher shadow distance etc.

Thanks!

Edit. See my reply. MSAA was culprit

 

Mip mapping ?

if your in HDRP i would first suspect a problem related to affect secular a setting found on man dir light
affect specular has been the plague of unity with destroying AAA work and impossible to work with when enabled for all things such as hair skin vegitation .. basically anything that uses diffusion profiles as they have no way to disable it locally.. multiple PR changes have been submitted now for the last 2 years and still never merged into the main branch

 

Thanks for the reply. Using URP at the moment. Did discover what the issue was. MSAA. For whatever reason it doesnt play nice in this scene...