It might depend on the icons that you are using. Canvas rendering provides good performance but supports less features than SVG rendering. Canvas doesn't render animations as smoothly as SVG. I also saw size and duration constraints that you may want to review.
Size and Duration Constraints:
Canvas-rendered Lottie animations have specific constraints:
Size: The Lottie sticker size must be 2048x2048 pixels or less.
Duration: The duration must not exceed 10 seconds.
File Size: The Lottie sticker must not exceed 0.5 MB.
No 3D Layers: Canvas rendering does not support 3D layers.
No Fonts or Media Assets: Avoid using font references or media assets within the Lottie composition.
No Text Layers: Canvas rendering does not handle text layers.
No Time Remapping: Time remapping is not supported.
No Star Shapes or Gradient Strokes: These features are not compatible with Canvas rendering.
I hope this helps. Below are the links to the two articles you may want to review.
Limitations of Lottie Animation in Canva
https://help.lottiefiles.com/hc/en-us/articles/23118704711577-Limitations-of-Lottie-animation-in-Canva
What are the difference between the web HTML SVG and Canvas rendered
https://help.lottiefiles.com/hc/en-us/articles/14942437475481-What-are-the-differences-between-the-web-HTML-SVG-and-Canvas-rendered
