How to optimize game rendering with pure JS and CSS?

Question

css

isc.96.lt/t/gam/mar
When burning and shooting at the same time, the fall slows down ...
as I understand it, it does not have time to draw everything ...
If someone fumbles hard in the Timeline, profiles chrome console, where can I optimize my code?
Thank you .
The task is to use the native and reveal its full potential.
This is done in order to maximize the skill in the intricacies of optimization.

Answer 1

you can also look in the direction of the Web Animations API .. Although all this is still under development .. Again, you should use css animation to the maximum