Total Annihilation has just hit Steam

yes, the crash with windows 8/10 and AMD cards hasn't been fixed yet

Yep, have to play the game minimized or the game will crash on AMD anyway. Windowed means no megamap.

It really is a pain in the *** because I was going to buy a new AMD card next year...
I suppose I'll buy whatever supersedes the GTX 970 instead.

AMD works perfectly fine too but you will need the hotfix.

Yeah a few month ago I most certainly did use the megamap, on my AMD Radeon HD 7850. Don't remember any issues at all.

I don't recall the hotfix working

I installed the mod Zero on several PCs and a bunch of them had AMD cards. But you always need the hotfix. Does not work without. Did you install the hotfix properly? First install the community patch or mod afterwards extract the hotfix to the folder and overwrite/replace the old files.

the hotfix worked for me under windows 7, didn't work under windows 10 - though that was during the insider preview so I don't know if that's changed

also unrelated, wargaming owns the totalannihilation.com domain name and they currently have it parked
https://www.instra.com/en/whois/whois-result/totalannihilation_com