Editor has very high GPU usage

[Trurl101]

My system:
iMac5k, Big Sur 11.2, Quad Core i7, AMD Radeon R9 M295X 4GB

How I start the editor:
java -XstartOnFirstThread -jar talos.1.2.0.jar

The Talos Editor has very GPU usage from the start. GPU usage above 90%. Even with no effect loaded.

If I click in other windows the GPU usage from the Talos editor goes down to under 20%. Clicking the Talos window again and GPU usage goes up.

The GPU usage is independent from the particle effect (empty start template, fire example, beam example) so it seems some editor components are driving GPU crazy when the window is active.