Casting bar AddOn efficiency

[Terenna]

Good afternoon,

I have completed a casting bar AddOn. To my knowledge, it does not have any bugs after a week's worth of use. It behaves how I would like it to across all scenarios I could come up with. At this point, I am looking to make it more efficient with CPU usage, and if possible, memory usage so long as it does not come at the expense of increasing CPU usage.

The code may be found here: https://pastebin.com/yXd9JLq2

I appreciate any and all feedback.

Thank you.