I haven't played the Steam version yet, but I own it, and I've read in the Steam forums and reviews that some people have issues with bugs and stability in Windows 10. I'm wondering if the GoG version has been tweaked or patched to address some causes of issues that the Steam version has for some people.

I haven't tested the steam version for CoJ 1 to see if it works on Windows 10, But atm I'm playing through the GOG version. I'm on episode 5 in the game with about 2 hours playtime. I had an early crash from trying to quick save and since then it's been stable for me on relying on auto saves and manual saves. Hope it's an answer you were looking for

I have fallen through the map once other then that no issues.

I'm crashing fairly often in the mines and treasure room levels while playing as Ray, and I don't know why. I assumed originally it was due to modding, but even after I completely reinstalled the game, it was still crashing in those areas.

I've finished game today (GOG version) I had three major issues:

1.Falling out the map during animation when Ray is meeting dying guard in the tunnel (skipping animation helped though).

2.By some bizzare reason DirectX 10 version was often crashing when I was fighting with Juarez in the treasury. In "normal" version it worked fine.

3.Normal version had some bug which caused that Billy instantly died before gun duel with Juarez (in the fort), surprisingly, DirectX 10 version didn't had that problem at all.

And once Juarez (animation in the fort, where Ray brought with him hidden Gattling Gun) was glitched like crazy, but this wasn't affecting gameplay.

Other than that - everything else was working as it should.

I experienced an error where Ray takes the pistoles from the chest and he goes down while talking to himself and was falling through the map into nothing. ^^ And on the Tunnel with the Train Ray glitches to right postion out of the tunnel after animation he was half on the map and half out the map, pressing spacebar for jumping helped. everything was normal.

These bugs are curious.

I hope the game Chrome would make the jump to gog.

Try forcing vsync on NVIDIA control panel. That stopped that problem for me on steam.

Thank you so much for the hint. But i beated CoJ some weeks before. It was great to replay it after 10 years. :-)