Gothic I/II tweaking advice

I am about to play thru Gothic I and II in anticipation of CP1.70 for Gothic III.

There is abundant tweaking knowledge out there for Gothic III so I am good there. However, I am looking for tweaking tips for Gothic I and II to squeeze every last drop of IQ out of these aging engines.

I have a good PC, and would like to know what texture packs, ini file tweaks, etc. are available.

I have found ThielHater and Freddys texture packs for Gothic I, and am looking for more of that sort of stuff.

Thanks!