Out of curiosity, I launched version 18.75 of the game today. I hadn't played it for months. Guess what. It's so slow that it's close to unplayable on my machine. I don't know why. The game is always very fast, but there is something in the input routines that wouldn't work, slowing down the mouse in the process. Anyway, that problem doesn't appear in the upcoming version. Everything that was slow for you in the current version, might probably be fast in the next. We'll see. I'm preparing a special beta version for registered users. If you're on my mailing list, well... Wait for my e-mail ! It'll be coming this week
Update : I've been told by an user that the problem I was describing happened only with 40+ Detonator drivers (the latest ones), not with the 30+ series. And indeed I was using the 40+ series. I thought you'd like to know.