The only flaw is the slightly slow response times when you press the buttons.

惟一的缺陷就是当你按按钮时稍慢的反应时间。

My deepest apologies for the slow response.

我对我缓慢的回复而深深地抱歉。

In short, the long term costs of a slow response are rarely taken into account.

简短地说，人们很少考虑到缓慢反应的长期成本。

You must be aware that there are various reasons why you may receive a slow response.

你一定知道原因是多方面的，你可以得到反应迟钝。

When the system is nearly at its peak, the users may get impatient with slow response time.

当系统几乎达到峰值时，用户可能会难以忍受缓慢的响应速度。