GoG addressed some major sore spots with that old PC Breath of Fire IV release:
1.0 hotfix4 changelog:

*I wanted to include a screenshot of the game at 1680x1050 (16:10), Point sampled/contrast 0.7, but all windows captures is a black screen.
1.0 hotfix4 changelog:
- Fixed audio engine inaccurate panning (noticeable in the opening cutscene).
- Fixed higher than expected CPU utilization (thanks Xeshra for the feedback).
- Added a PSX-like graphics option with the newly available “Point sampled” texture filtering to make the gorgeous pixel art stand out even more. The “Bilinear” texture filtering option has also been implemented.

*I wanted to include a screenshot of the game at 1680x1050 (16:10), Point sampled/contrast 0.7, but all windows captures is a black screen.