The problem is that during the FIRST ACCEPT of skills, a very long lag appears.
The strangest thing is that it occurs only at the beginning - once the browser bites this lag, the subsequent launches are smooth.
I thought it was the fault of optimization - but we subjected the whole scene to detailed optimization, leaving only one light source and the model 90% trimmed in all respects. The game is smoother, but the problem of the first lag still remains.
All I have is a an error that pops up once in a while:
THREE.WebGLProgram: shader error: 1282 35715 false gl.getProgramInfoLog Could not pack varying vUv Note: Additional non-conformant packing restrictions are enforced on D3D9.