I actually thought the CG on Grodd was pretty good for the most part, especially with that one amazing shot where he holds Barry up close to his head before throwing him through the wall. There were other shots that weren't quite as strong (like the first full view we and Joe get of him), but overall I still thought it did more than enough to sell the character on screen.
And the Iris actress did a really good job in this episode as well, even if I thought her anger at Joe and Barry was a bit over the top, considering that they were both clearly acting with good intentions. But then it's not exactly new for people on these Arrowverse shows to react to everything in an overly emotional and melodramatic way, so I guess I should be used to that by now.
Although still, you'd think just learning that Barry was the Flash would be something that would have her a lot more amazed and excited than she was. And would temper at least a little bit of that anger she was feeling.
And the Iris actress did a really good job in this episode as well, even if I thought her anger at Joe and Barry was a bit over the top, considering that they were both clearly acting with good intentions. But then it's not exactly new for people on these Arrowverse shows to react to everything in an overly emotional and melodramatic way, so I guess I should be used to that by now.

Although still, you'd think just learning that Barry was the Flash would be something that would have her a lot more amazed and excited than she was. And would temper at least a little bit of that anger she was feeling.