The oven takes a long time to come to temperture

or you have a bad temperature probe or you have a bad temperature probe

Another possibility is that the igniters (under the oven floor) are due for replacement.
If the oven does a bad job of maintaining temperature, you can suspect the igniters. The igniters fail gradually, so this problem would slowly get worse over months of oven use. Another possibility is that the igniters (under the oven floor) are due for replacement. If the oven does a bad job of maintaining temperature, you can suspect the igniters. The igniters fail gradually, so this problem would slowly get worse over months of oven use.