I am not a native speaker of English, and I'm having a problem at work about the word "shortened" . I used this word to express that our new product can now load XXX much faster than the previous model, so I used in the Power Point as; -Shortend time to load XXX But then I received a feedback from other people (also non-native speaker of English), who says that this expression contains a "NEGATIVE meaning". Honestly I didn't understand this but is this true? Please someone help me.. Thank you.
Your colleagues are wrong. People do not like waiting for programs to load and start. Progress bars are much hated, partly because of their unreliability but also because waiting while a file downloads or a program starts or a video finishes buffering is often a tiresome and depressing experience.
The verb shorten is semantically neutral and has no negative connotations by default. Shorten a pleasurable experience and people will regret it. Shorten a painful one and they will thank you. On your presentation, the use of this phrase is a win.
Perhaps your colleagues are confused because the adjective short can be seen as an insult, or at least a way of diminishing a person´s importance, when applied to their stature.
Use the phrase. It is well chosen.
Actually, you've provided your own answer.
People have been conditioned to consider the relationship between time and computer software in terms of speed ("fast") versus duration ("short").
So when you "express that [your] new product can now load XXX much faster," then that's exactly how software users expect to have an upgrade presented to them. For example, you could say something like "Our new product loads 30% faster!"
Although a "shortened" load time is technically correct and expressing it in terms of duration is accurate, that's not the point. The point is employing verbiage that resonates with your software user base. Use the words they expect you to use; the words that mean the most to them.