Download the patch from:
https://drive.google.com/open?id=1s3FneGgAv3u5YEteZ33_bjoSSgKzDltZ

and then uncompress its contents into the game directory with 'swtfu.exe' (usually "...\Steam\steamapps\common\Star Wars The Force Unleashed").

Then start the SWTFU60fps.bat script from the patch to automatically patch the game exe.*

Enjoy the game in glorious 60 fps!

⚠️ One last thing: original game has a bug (?) when you grab objects with the force they will slowly lift up... humanoids grab seems unaffected. Unfortunately using the 60fps patch this behaviour will be accelerated and objects will lift up much faster, but that's an original game problem even at 30fps (only less noticeable).
There is no working fix for SWTFU (-VariableTimeSteps etc. work only with SWTFU2!).

Recommended NVidia settings:
Limit framerate V3 = 60 (or menus will waste GPU power running uncapped)
VSycn= ON

* If batch file fails, do it manually:
1. from cmd prompt: 2. rename "SWTFU_patched.exe" to "SWTFU.exe", like the original exe

jptch.exe copyright is owned by Joris Heirbaut
http://jojodiff.sourceforge.net/

Disable any Compatibility Mode you may have set (Win7 compatibility, run as admin, etc.).
After the patch, to improve stability and potentially fix random crashes, with an hex editor like HxD modify at the offset/address:
0000011E: 03 -> 23

If you're too noob to manually modify the SWTFU.exe, you can try with tool 4GB Patch: https://ntcore.com/?page_id=371

(This won't fix all loading/fmv crashes but should reduce them drastically)

As reported by user Doom Gael, here is also a sound fix for those experiencing this kind of bug:

I was experiencing sound bugs on Imperial Raxus Prime, and just so happened to stumble upon this fix for the game:

Extract to LevelPacks in the installation folder, replacing the existing files when prompted.
https://community.pcgamingwiki.com/files/file/505-star-wars-the-force-unleashed-missing-sounds-fix/