Problem playing midi file with my new laptop

[snorkyller]

Hello,

I'd like to use FL Studio with my new laptop which I bought in summer 2015 but I realized that I have problems playing midi file. When there are many instruments, some notes are cut off and there are a lot of clicks sound.

This problem occurs with the default midi synth and also occurs when I use a specific sound font.

Can you tell me what I can do to solve this problem? I didn't have this problem with my old laptop.

Here's my new laptop:
Thinkpad lenovo E550
Intel core i7 5500U
8 Go RAM DDR3
Audio: Conexant Smart Audio HD
On Windows 7 professional 64 bit service pack 1

Thank you