Millisecond Forums

 I'm using inquist 4 web for my online study. In the study participants simply need to press the space bar then a picture will be presented immediately. The program works fine on my computer, but once I uploaded the script online, sometimes the program kind of freezes for the first trial of each block. That is, after pressing the space bar, sometimes it takes very long to display the picture. From the second trial on the program runs very smoothly and there is no delay. Did anyone encounter this problem before? Is there a way to go around this problem?