Why not use Point Cache to cache the result?
tyFlex has an internal cache because flex dynamics are history dependent, and therefore more amenable to a cached workflow. On the other hand, tyConform is not history dependent...so it has to recalculate the frame you land on, but not all the prior frames as well. The typical way to cache something like that is to use the Point Cache modifier, rather than adding internal caches to all history independent mods.
tyFlex has an internal cache because flex dynamics are history dependent, and therefore more amenable to a cached workflow. On the other hand, tyConform is not history dependent...so it has to recalculate the frame you land on, but not all the prior frames as well. The typical way to cache something like that is to use the Point Cache modifier, rather than adding internal caches to all history independent mods.