exploring the animation possibilities for our project I tried to used the Character Solver for your project.
I applied a motion capture jump (Static Jump from the asset browser) to a mixamo rigged character. The problem is that it works fine with the standard MALE PUPPET character from the asset browser but not with a character downloaded from Mixamo. During the sequence the characters motion captured feet never reach a position below 0 on Y axis.
When applied to MALE PUPPET also. When applied to the mixamo characters it reaches -Y and the jump starts below the ground.
To track the problem down I used the standard characters from mixamo, to be sure not to messed up anything else.
I used a tall character and small character for test.
For the tall character it works better than for the small.
Is it possible to use the character solver for mixamo characters or is it intended not to work for this? Maybe anyone already tried, too and knows the answer.