Stuttering / Slow Downs / Games that are not playable on A600GS

[Twiggy]

Has anyone else tried Dune 2? It seems to crash on the highscore screen. I'd imagine an error to do with writing to disk.

[Twiggy]

Hi, got a few more!

Indiana Jones And The Fate Of Atlantis (adventure) - says out of memory then crashes (v2.3_0851)

Secret of Monkey Island shows "Game Paused. Press SPACE to Continue." throughout the intro. despite no keys being pressed. Game otherwise works fine. Kinda slow, but maybe that's just the Amiga version (v3.7_1625)

Kings Quest V is also really slow (v1.3).

Worms Directors Cut doesn't seem to load (only tried v1.3_AGA_8MB_0605)

Cheers