Here's what I get in P7 using ice-boy's settings for his spot light in his first post about this issue. First with M4 - Notice using RT shadows I don't get anywhere near the same pronounced issues as bb. P7 doesn't have gamma correction at render time, but there is still material based GC - I wonder if GC accentuates the issue in Poser Pro (?). P7's implementation of DM shadows does seem clunky though, especially with lights angled like this.

 

PoserPro2014(Sr4), Win7 x64, display units set to inches.

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