Challenge ratings.... most of the creatures so far in game have a 0 or 1/4 challenge rating. Anyone who says level 10 is fine is deluded or never played bg II.

Here's a little comparison for you as to how terribly bad level 10 for the third game in the series is.

https://baldursgate.fandom.com/wiki/Experience_Tables


Take Care, Have Fun and Bee Well!