Google page speed strange variations

[bonsaiko]

Hello,

 

I thought my site was too slow so I decied to test it with Google Page speed. 

Strangely, the results I get are very different from one time to another.

 

For example, I ran a test a few minutes agot and I got:

- 73/100 on mobile

- 91/100 on desktop

 

I couldn't believe it so I ran the test again, and this time I got:

- 52/100 on mibile

- 67/100 on desktop.

 

In the meantim I didn't do anything at all !!!

 

Let's try one more time:

64/100 mobile

81/100 desktop

 

Do you have an idea of why these results are never the same (and very different from one another) ?

 

Thanks for your help.