I got burned on the Gog.com game "Divine Divinity".
I am just wondering if Lionheart also crashes every ten minutes.

DD crashes every 10 minutes for you? Odd. I never had THAT problem...
Anyway, I have noticed that Lionheart crashes sometimes randomly, but for me it does so much more often than DD did. It wasn't bad enough to make the game uplayable by any means, but I have no idea how it will perform on your computer.

haven't played Divine Divinity. Lionheart hasn't crashed on me yet, and I've played it for at least a 2 hour session. From the game menu, I've even been able to minimize the game, browse the net and then resume playing.
I won't vouch for the gameplay or story, but as far as stability goes, it's been rock solid on my machine.

it is not helpful at all I am sure, but the disk version had only rare crashes. I don't have the gog version so I cannot say for sure.

Neither Divine Divinity nor Lionheart (both GOG versions) are crashing for me.

Divine Divinity never crashed on me and I logged a good 80+ hours into that game on multiple plays. No idea why it would crash for you.