10 sec
Filthy casual.
My family has a Chiq U58G7P. Warm boots take about 30 sec and cold boots a few minutes.
Don’t try and press any buttons on the remote during this time or for a minute or two afterwards. They might work, 15 seconds later, or they might get ignored. Sometimes your button press inputs get re-ordered too.
Factory resets do work, but then all it can do is broadcast TV. If you let it update and install streaming apps then you will be back to the same problems.
I suspect that it might be running out of RAM and thrashing some poor innocent MMC as swap, but I can’t find a USB ADB port to properly find out (maybe it has one internally?).
Magazine CDs and DVDs were my bacon.