A few people are having performance related issues, but I don't recall seeing this particular problem.
Please email supportdos@larian.com, with a description of the problem and the report.zip file generated by the
D:OS support tool (for the PC version). The report will contain your saves, which are not directly relevant, so if file size is an issue most can be deleted from the zip.
Did you go through all the dialogue options with Sam and Maxine the first time around? Maybe you missed something that you did the second time?
RPS should be random, with modifiers based on stats and situational bonuses or penalties.