Can I edit the XML to get high textures, by setting textures = 2 as opposed to 1, with the hotfix?

XP SP3 compatability mode doesn't help me get high textures.

Two World 2 runs on maximum, STALKER and Risen with the massive mod texture packs also run without a problem. Divinity 2: ED ran with the 1GB texture mod no problem...

How can I force high textures? Will the next patch allow it?