what's a high tier speedster

The Flash (TV series) ACTS - it is the subject of the video, with clips from the show used to illustrate the concept of a "high tier speedster" vs a "low tier flash". Removing it would change what happens in the video. The Flash (DC Comics character) ACTS - it is the subject of the video, with clips from the show used to illustrate the concept of a "high tier speedster" vs a "low tier flash". Removing it would change what happens in the video. Grant Gustin ACTS - he is the actor portraying The Flash, and clips of him are used to illustrate the concept. Removing him would change what happens in the video. Barry Allen ACTS - he is the character portrayed by Grant Gustin, and clips of him are used to illustrate the concept. Removing him would change what happens in the video.