Can a code where quite a lot of data will be send through, slow down your Arduin

Can a code where quite a lot of data will be send through, slow down your Arduino?

I have the following thing, I made a radar like this (Arduino Radar Project - YouTube) and every 30 seconds it send the distance + angle to Processing, now my Processing code is pretty big for the Radar and it has some 'if' statements that have to be checked the whole time and it's working through Bluetooth. So now my question is: Can the 'if-statements' and a lot of data being send to the Arduino slow down your Arduino?

Because the servo motor on my Arduino to rotate the radar (watch video for quick idea what's going on!), rotates like from 100 to 105 and then it stops, and then it slowly goes to 110 etc... it stops slowly and then it continues but with intervals, any fix or..? (Didn't include code because I think it's well explained already.. if you need it just ask me, but it was just a quick question, sorry if wrong section!)

Greetings!!

My bad, I meant 30 MILLI seconds of course.

Yes, lots of things can occupy your Arduino’s time.

Code? …in code tags if <9KB, or attach it.

Cheers,
/dev