Wahoo Kickr Core - workouts intervals delay

Hello, nowdays I have a problem while I do a workout. When I have to do 300w interval, there is a (for example) 5min delay between interval (in Zwift) and 300w resistance created Kickr Core powertrainer. I am connected to my notebook by using a Bluetooth. Kickr Core is updated to 1.0.6. Can you guys help me please? Thx.