If you're getting freezing, crashing, or other problems, then it needs to be fixed.

These issues are usually related to overclocking too much, undervolting too much, or your PSU is too weak.
If the miner is plugged into a socket that shared by multiple items, you can max out on power pretty quickly.

Just for reference, most U.S. cables are 15amp 120v = 1,800 watts. So if you have a 1200w miner, your pc running, monitors, phone charger, and vaccuum cleaner, you will quickly overload the circuit.

It's best to put them on their own dedicated 200-240v circuit.

I have my miners running for 300+ hours before needing to restart. Some get to 500+ hours.