Usage of not yet loaded resources or some skills in general causes lag

Describe the bug Usage of not yet loaded resources or some skills in general causes lag.

To Reproduce Steps to reproduce the behavior:

1. Start the game for a character.
2. Use skill.
3. Observe the game hanging for a second.

Expected behavior The skill is cast.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu LTS
• Version: 20.04

Additional context