changed graphics but no change maybe scampy has a save as further on than me
The game requirements listed at Steam are for a
DirectX® 9 compatible graphics card with at least 2 GB dedicated memory
If you are using a video card that doesn't meet the requirements, without enough dedicated video memory, getting a save from later in the game isn't going to help you.
Game-Debate is more specific about the video card
http://www.game-debate.com/games/index.php?g_id=23405&game=Lost%20Horizon%202Minimum requirement is GeForce GT 730 or Radeon HD 7570 v2.
Recommended requirement is GeForce GTX 750 Ti or Radeon R7 260X
They don't list Intel graphics at all.
The video card requirements seem high for this sort of game -- a lot higher than the first Lost Horizon game.
If your video card is borderline, you'll probably have sluggish response throughout the game. Since you say you don't have sluggish mouse response outside of the game, I am assuming you aren't using a wireless mouse with low batteries.
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There is a video review on YouTube that shows a configuration screen with graphics options that appears before the game actually starts. This might override the graphics options within the game, so it's worth checking.
https://www.youtube.com/watch?v=h7VqeuFML40&feature=youtu.beIt is a very poor review, made by someone who clearly does not understand or enjoy adventure games, but it does show the configuration controls around 2 minutes 15 seconds into the review.