When I drag images across the screen, there a disturbing lag, and strong trailing. How do I fix this?
There can be different causes for the issue, below are some known causes for this problem.
Weak electricity network. Especially with multiple Cells a multitouch installation takes plenty of electricity. We have seen cases where poor system performance is remedied by simply arranging more power to the Cells and the computer. It should be noted that weak/fluctuating power grid does not stop the Cell/computer operation completely, but makes it just more sluggish and random.
Cold. Using the Cells in cold environments (below 10C/50F) can cause problems with the LCD panels, since the response time of the LCD panel increases as the temperature drops. In general touch-displays are not very useful when temperature goes below 10C/50F, because the surface is then uncomfortable for the touch, but sometimes trade-show construction is done in such temperatures.
I have a sound card that is not working correctly. There is no sound. What to do?
First of all, you should check that the sound card is detected by the PortAudio device handlers, by using the ListPortAudioDevices application found from bin folder. You should also check that you are using the correct sound card/API. This can be checked by running any video-enable application in verbose mode, and checking the application debug output.
