1+2. Do you have a save in/before combat where these problems can consistently be reproduced?
If so, please email it (or a Dropbox or Google drive link, etc) to supportdos2@larian.com, with a description (or link to this topic).
Each save is a folder in the '..\Documents\Larian Studios\Divinity Original Sin 2\PlayerProfiles\<ProfileName>\Savegames' folder. In Windows Explorer you can zip file(s) and folder(s) by right clicking on it/them and selecting 'Send To | Compressed (zipper) Folder'.

Also include a dxdiag report (WinKey-R, type in dxdiag and hit enter, then when it finishes loading click on the 'Save All Information...' button and save the report somewhere handy).