How to imptove performance of serialport data reading

Question

Hello,

 

I am developing app to monitor the serialport data. Right now i am able to get serialport data & display over datagridview.

 

However i am missing 20-30% of incoming datastream to reflect over datagridview. My data is coming with 5.25Mbps speed.

 

Poosible error :

1. Use of strings & conversion to Hex data which consumes more time & overwrites data

2. Interlinking of different threads & functions in program.

 

Possible Solution:

1. use of Queue & indexes which can act as ring buffer

2. Data logging (Raw binary stream) in different thread & save to file over PC & later use this file to display data over datagridview using Streamreader.

 

So can anybody tell me whats wrong in my current version. How i can improve performace so that i can display what i got from serialport without any data leakage.

 

Also how i can automatically save data using streamwriter when i click the start button. It can be a backgroundworker or parallel activity along with reading & displaying data over datagridview.