Originally Posted by pvaudio
We'll have to agree to disagree because I have not once in my years of playing full synthetic gut have I ever had the strings stay straight for more than half an hour. After syn guts, I played NRG2 for years which also moves a lot and has superb tension stability and stays out of place because it frays terribly within an hour. In the Sensation Control playtest last year, within an hour of just rallying I was cracking the strings back into place. The playability had not dropped considerably. The strings sliding when the ball hits it abrades the surface. That increases friction, and causes the strings to not snap back. The softness can cause minor notching as well. This occurs well before a few hours.
I've never had synthetic gut stay straight by the time our warm up ended.