The black 'ghost' around the player would mean that, even being the same size, some artifacts could be rendered with a LOD shadow model, since the geometry of the reduced polygons model will not match 100% the original model.
I uploaded the new project with the LOD models. This time all the models and code are open (unpacked) for any analysis you need.
As for the movement speed - I am using
time_step for all movement and animation. Indeed, I wrote my movement script (mActor.wdl) using the A6 template 'BipedPhy' as a side-reference! I even tried another options like time_frame, and messed with time_smooth variable, but it's still frame rate dependent, and unless I have really overseen something, it shouldn't.
The link:
http://www.moscafilms.com.br/mgame/demo1809open.zip