Davis67: Hi Matias,
I found the following links helpful for getting Tomb Raider 2 run more nicely (before the TRR came out):
(1) This is different than the multipatch you're talking about. This automated fix asks for a 'clean install' of either the GoG or Steam install of Tomb Raider 2. It uses dgVoodoo dlls (intercepts DirectX systems call from older games to work better with modern hardware). If you don't like the automated fix then you can download the "Source code (zip)" files and sort out what goes where.
https://github.com/Carlmundo/TombRaider2-AutomatedFix/releases/tag/1.0 (2) These files are already in the download above, BUT having the dgVoodoo dlls might help other, older games run more smoothly.
http://dege.fw.hu/dgVoodoo2/dgVoodoo2/
The link "dgVoodoo v2.82.3" are the dlls I'm referencing.
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It takes some figuring out what to keep, what to throw away. Again, your mileage may vary. Hope this helps and doesn't lead you too far down a rabbit hole! Good luck.
For what it's worth, you can play TRR like the original games by pressing "F1" to toggle between old style and modern graphics. Everything is contained in a nice, tight package and runs more smoothly.