Hiya,
Yep version 1.11 still supported RTG (although, maybe not that well?), version 1.12 doesn't have any RTG support and is the one I'm playing with at home
As I posted elsewhere, I've now confirmed that HSMathLibs are a must for AmiQuake (and my other ports). I don't think CyberPatcher/OxyPatcher will make any difference.