I second that this is not normal behavior. What we have seen in the past is that WiFi and internet issues are among the leading causes of this type of behavior.
Yes, I know there is nothing wrong with your WiFi and your internet is 35 gigabit, but the first steps that you will be asked to do is to reboot your router and modem and ensure that you are getting a solid signal from your WiFi router to your GF. I suggest using a WiFi app on your phone to get an actual signal measurement. Some informal testing done several months ago shows that you should have a signal strength of -55dB or more, with lower numbers being stronger signal, for best results, and that a connection speed of at least 5 Mbps is preferred.
Please also run the test of the Gift of Good Measure and ensure that the issue is not with your file as this has also been shown to be the source of issues.
For reference, my GF Basic takes about 5 minutes to be ready for the first cut from a cold start until it has calibrated and the bed photo has updated on the GFUI. Then it takes about 1-2 minutes to load the file when starting from scratch with a new project. Once the file is ready, a 15 minute engrave takes about 2 minutes to be ready to start as the head moves around and measures the material and does its little startups.
If your room is approaching the upper edge of the temperature range you will need to wait for cooling more often. Make sure that the right side of the GF is not obstructed and you can get clear airflow into the GF, and that the cooler air in the room can get to that area of the unit. You may want to lower the room temperature also; the lower the incoming air temperature is the faster the GF will cool and be ready to continue.
When my work area is 76 F I can run about 30 minutes of cutting before I have to pause for cooling, which usually takes about 10 minutes. Running higher power will decrease the operation time between cooling pauses.