I don't quite get what you are trying, but it seems to me you're applying the Timewarp inside the pre-comp, which is of course not going to achieve what you want... And yeh, time-remapping is just a simplified version of TW, so the quality is sometimes not that good...
Just trying to apply slow motion (Time Warp) to a specific clip. Want the whole clip to be in slow motion.
Here's what I discovered this morning:
Put 4-second clip into comp.
Double length of comp to 8 seconds.
Add adjustment layer of 8 seconds.
Apply Time Warp to adjustment layer.
Voila! Clip runs at 50% speed AND through to the end of the clip. Previously, when I applied Time Warp directly to the clip, the clip stayed at 4 seconds and merely slow-mo'd the first "half" of the clip. The rest was cut off.
Now, hopefully when I render this sucker, I'll get the full clip of 8 seconds, rather 4 seconds at 50% speed.
This worked like a dream. Super slow mo, full length of clip. Fan-freakin-tastic!
Brilliant CJ. This was driving me batty! The TW effect does not work in a very intuitive manner.