Fans have fixed the SH 2-3 PC ports after 23 years. You're welcome.

https://www.youtube.com/watch?v=TGMtwfHkoZc

Fans fixed the SH2-3 ports (mostly).

SH2 has "Enhanced edition" which is a massive polish and bugfix.

SH3 doesn't have anything as extensive, but it fixes many issues:
https://community.pcgamingwiki.com/files/file/1331-silent-hill-3-pc-fix-by-steam006/

Both have a custom "zealot camera" which allows for custom camera and manual aiming.

https://www.youtube.com/watch?v=TGMtwfHkoZc

PC versions run at 60fps and custom resolutions.

https://www.youtube.com/watch?v=TGMtwfHkoZc
https://www.youtube.com/watch?v=tU9kBVVzMiI&t=1s
https://www.youtube.com/watch?v=YcZ98I6sxkk&t=184s

Fans have fixed the PC Ports taht Konami started.