The original question was if the computer is to blame. Yes it is. You tell you are addicted to a flight simulation program. This will most likely make you turn your head in certain positions. Also in general it is not advisable for no one to stay in one posture over a longer period which would be 0.5 hours. Computergames will tempt you to do it much and much longer. In case you have already a problem with your neck it will not help. For sure if you have already some radiation/ reffered pains or alike. Depending on how important this program is to you you should consider to limit your time on the computer. P.e. use a eggtimer or install a system on your computer to limit your time, have a break, do some exercises, reinstall your posture, take control. self mobilisation would be an option. good luck