Data refresh rate is so slow? why

Data refresh rate is so slow? why
the attcchment is the video.
monitor.rar (611 KB)

What is the connection method to the RMC? RS-232 is quite slow. Ethernet is usually fast, unless the network traffic is heavy. Ethernet over the Internet can often be very slow.
I noticed that your RMCTools project had many windows open. It can help to close them.

When you attach videos, please use a common video format, such as mp4, wav, mov, etc. Executable files (exe) make us nervous.

thank you. i got it.