The Glitch and 3D Spin transitions are not optimized for Intel Iris graphics. If you are on a 2019 Intel MacBook Pro, expect fan noise and occasional stuttering.
This is a major plus for beginners. Many advanced packs require you to drop a transition on the cut, then open the Inspector to adjust "Duration" and "Color Grade Matching." HyGear automates 90% of this. Drop it, render it, and it works. HyGear Final Cut Pro X Transition Pack
These feature adjustable durations. Editors can manually stretch or contract the transition length inside FCPX to perfectly fit custom project pacing. The Glitch and 3D Spin transitions are not