I use RTG on all my presently active classic Amigas. Not sure why Chaos Lord has such instability, mine work fine.
I only use the native chipset for playing old games and watching demos. If it's OS friendly, it generally retargets fine.
Writing games that work well on both the native chipset and RTG strikes me as a bit of an artform. Each has different strengths and weaknesses and they arrange their data very differently.
