maml_trpo not good as trpo in PointEnv environment?

[tianyma]

Hi there, I am currently on the master branch, I test maml_trpo and trpo on garage env PointEnv to see if maml_trpo works better than trpo, but I found the result not good as expected. I post the average return and success rate below.
Here are maml results.

Here are trpo results.

this is quite confusing, cause I thought the success rate of maml reaches 1.0 faster than trpo.