I got blisters on 6 July. We are on 14 December. Or 161 days since I received them. Taking into account a continuous ignition, that's 3864 hours.
The three bulbs are defective long time. It is far from the 50,000 hours provided. Not even 10%, for the three bulbs. I checked by cusiosité. A LED on a skipped blisters, feeding on another.
In short, take your legs to your neck and run away these bulbs at full speed.