Experience Converter has a really laggy animation. Completely lags my client when its placed. Is it just me?

I would suggest removing the animation.

The animation isn't smooth/fluid, it updates based on block data, not tile entity data. This makes the animation look laggy at times.

If it causes actual lag, I have no clue. Ask the other folks from GTNH and see if they've had the issue.

Please let me know if this is still an issue.