Hello guys. Videos on youtube suffer from stuttering. I activated HDMI Level 2 in settings. My tv is a panasonic 4k 60 hz. Sometimes playback is fluid but often the problem occurs. Stuttering occurs only on the playstore youtube. Kodi is ok. I tried firmware FW007A AND FW008. I also tried to reset and install the system image with USB flashing tool. You can help me?