Tsec keys function always disabled host1x clock after running. This interferes with display interface and disables further window frame syncing. Display_end code already handles disable and reset of said clock. It also fixes an ancient bug that was mitigated by removing the 5 frame sync on HOST1X_SYNC_SYNCPT_9 at channel 0: https://github.com/CTCaer/hekate/commit/5fd9daa3642216ae8a28f6cb662a262e29e7ce06#diff-6b0c56eab8515465d559ff0ea73a22c3L152