It’s probably safe to say that the days of the optical drive are coming to a close. Not this week, not this year, perhaps not even this decade but I think the writing is on the wall. But not to worry.
Many computers are now built without DVD drives. This can cause big problems when you need to restore your computer.
A new computer might burn DVDs faster depending on what’s limiting your burning speed now. It could be the CPU, but it could also be something else.