About Windows10 Task Manager GPU 3D high occupancy

Hello everyone, my computer os is Windows10 Education Edition,

The version number is 1909,

I have a question? Why do I see 35% GPU 3D occupancy rate on the task manager of Windows 10, while I do nothing in OFAPP.
How can I improve this situation? thanks

here is code,but i not do something.
void ofApp::setup(){
ofSetVerticalSync(true);
}
void ofApp::update(){
}
void ofApp::draw(){
}
//--------------------------------------------------------------
void ofApp::keyPressed(int key){

}

//--------------------------------------------------------------
void ofApp::keyReleased(int key){

}

//--------------------------------------------------------------
void ofApp::mouseMoved(int x, int y){

}

//--------------------------------------------------------------
void ofApp::mouseDragged(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mousePressed(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mouseReleased(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mouseEntered(int x, int y){

}

//--------------------------------------------------------------
void ofApp::mouseExited(int x, int y){

}

//--------------------------------------------------------------
void ofApp::windowResized(int w, int h){

}

//--------------------------------------------------------------
void ofApp::gotMessage(ofMessage msg){

}

//--------------------------------------------------------------
void ofApp::dragEvent(ofDragInfo dragInfo){

}

My computer graphics card is a CPU integrated graphics card

What happens when you turn vsync off?

If it’s anything like in a gaming, it’s probably meant to synchronize the frame rate of your ofApp with the refresh rate of your display to avoid screen tearing artifacts. There’s really no need in switching it on, if you haven’t set up anything else, since it probably does frame-by-frame computations behind the scenes.