TC always played pretty well for me performance wise, and it's generally slightly better now I've applied the 1.3 patch.
A couple of things I have noticed occuring soon after applying the patch are:
1. Often when there's a fight going on, my HDD light comes on & stays on for ages - it never did this before. This also happens sometimes when flying through a relatively empty sector such as Presidents End.
2. A couple of times in combat now I've noticed the Freeze + HUD dissappearing for a fraction of a second bug many have reported. I'd never seen this in my long-term 1.2.1 game.
The other tweaks & re-balances are welcome though.
I DO run certain scripts in my game, they've not changed since 1.2.1 but possibly they have problems with 1.3, really don't know.
I'd say that generally things are better & smoother but I now get the above reported glitches every now & again I've not seen before. The only change on my system is the 1.3 patch, I'd be interested to hear if anyone else has the same experience.
None of the above is stopping me playing

Cheers,
Scoob.