Beat that fight on normal right after posting my complaints upstream. Just had to roll and kite a lot, get a few swipes in on one and then run around. I guess you have to dump 6 talent points into the Witcher tree before the other trees unlock, so I was stuck using the aard sign. Which at level 1 doesn't stun or knockback very well. When I beat that fight I think I took out the Mountain early on, the shield soldier was the last I killed. The combat still has a somewhat jerky, unresponsive feel to it (turn away from an enemy while holding down the W key and he stands there for a second or two getting attacked).
I turned motion blur off almost right away too. Can't stand not being able to pan my view around without everything becoming a blurry streak. Don't care for the UI for inventory at all either.
Yeah, the unresponsive feel is probably my biggest complaint. I also encountered the "random input block" bug described in the Readme file during some long fight. It's very annoying.
By the way, there are quick keys for signs described in the Readme file, which could be useful. 5 for Aard, 6 for Yrden, 7 for Igni, 8 for Quen, and 9 for Axii.
I didn't notice too much motion blur though. I guess it's because my frame rate is always pretty high (the motion blur effect seems to be visible only when frame rate is too low). I use GTX 460 SLI and high quality setting. I tried ultra setting but it's too jerky for me.