The time multipliers actually seem to have very little effect on the game, so far.
Acceleration is very slow, so even cranking up the timescale to 8x leaves the little blue bar to climb one pixel at a time.
There is more than enough time to click a steady speed before you get to it, and in combat, your choices are not "Speed X" they are "accelerate or decelerate?" You'll never reach your desired speed before it changes drastically
When you're cruising, you're moving at quite a clip already, and adding a time multiplier to your reaction speed dosen't help
Even if you do use it, you'll only have it kicked in for a few seconds before you need to slow it back down.
[ December 24, 2003, 03:38: Message edited by: Suicide Junkie ]