Those are a tad high. How are your others specs, compared to the minimum recommended?
For me, saves load in 10-12 seconds, and switching levels takes 4-9 seconds (4-6 for the homestead and Black Cove, 8-9 for Cyseal and Lucula Forest).
Core i5 3570K, 16GB RAM, ATI HD7870, SSD for Windows/programs, HDD for games/media.
During the Early Access a few people reported long load times fixed by updates, or sometimes load times increasing from one version to the next (I had a small increase with one of the versions, but if I wasn't timing it I probably wouldn't have noticed the difference). I'm not sure what the high end of normal load times are in the latest version, though.
Did you try verifying local files? In the Steam library, right click on Divinity Original Sin and select Properties, switch to the Local Files tab and then click on the 'Verify Integrity of Game Cache...' button.
Are you shutting down all non-essential programs (especially anti-virus) before starting the game?
You can email email@example.com, with a description of the problem and the report.zip file generated by the D:OS support tool
(for the PC version). The report will contain system and game information, any crash dumps, and your saved games. If file size is an issue, you can delete all saves but one from the zip file, since the slow load times are consistent.