I've migrated a project from AC19 to AC20.
I haven't changed ANY settings yet, my saved Sketch Rendered
views are different (see attached).
Have "Line Styles" changed (Tech Pencil is used in both examples)?
I can't replicate the AC19 output in AC20 
Marc Corney, Architect
Red Canoe Architecture, P. A.
Mac OS 10.15.7 (Catalina)
Processor: 3.6 GHz 8-Core Intel Core i9
Memory: 48 GB 2667 MHz DDR4
Graphics: Radeon Pro 580X 8GB
ArchiCAD 25 (5010 USA Full)