The original version had some serious bugs in the AddOn. And last i checked (long time ago) those were not fixed and the fixpacks were generally a mess to install, so i wondered how bad is the situation atm beyond the "it's playable", thx.
I played a few months ago and had not problem with the game except for a resolution bug the game has, but that is an easy fix.
Launch the game.
Press Alt+Enter in order to switch between full-screen and windowed mode.
Change in-game screen resolution.
Press Alt+Enter again to play full-screen with the selected resolution.
and I also install the "Tchos' HD UI panels and dialogue compilation and expansion" to improve the menus and stuff.
But the game is fully playable and I've only ever experienced 1 bug.