Baseline (Widescreen) Solution & Issues
Same as with the previous TY game, the game uses simulated windowboxing despite the FOV being extended to cover actors standing off the frame in cut-scenes.
Open up "TY3.exe" in a hex editing program.
Find the bytes "C7 44 91 20 00 00 00 FF", then replace it with "C7 44 91 20 00 00 00 00" on every occurrence
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Eyefinity / Surround Specific Solution & Issues
4k UHD Specific Solution & Issues
Same solution as above for other aspect ratios besides 16:9.