Right, let's hope for the best then (though tbh I can't be very positive regarding AMD drivers lol). Since now I know it's not only me who has the best results with 17.2.1, I'll try to fix my issue with the thread stuck blahblah error, it's the lesser evil. Thank you very much for your answer!
18.1.1 didn't support APU's
18.2.1 supports and works perfect with A8 6410 and R5 M230
Yep. Can confirm 18.2.1 driver solves the issue.
Tom Clancy's Rainbow Six Siege and Unigine Heaven Benchmark, both work now.
Thanks guys for the support and also thanks to AMDs driver team for solving the issue.