Very strange, considering that most likely my PC is worse than you as you just got a new PC, it's weird. Also that level is not really heavy, I mean, if you could open the Futuristic Tower level, I think that's the heaviest level to load (I have bittersweet memories when I was developing that level back in time, loading the light took forever...), maybe the My Home level could be 2nd heaviest level to load.
And sure, thank you! The new version doesn't change much at all, I remade the menus, changed/added some music, changed stuff in the Modern Home level and now the Hamster level is not included, it's a standalone game that can be found in my Animals game page :)
I really hope you can make this game to work, after so much time trying and seeing issues, I think the moment when you say that all the levels work fine for you, I'm going to celebrate it :D