Deep-Inspection slows down Upload speed for 60%

[toredd]

Hi people,

I did some testing because our upload/download speed is nowhere where it should be.
We have 1000/1000Mbps contract with our ISP.

When I test the speed without Deep Inspection we got 925/925, that is pretty great.
When I enable Deep inspection our speed goes to 850/350 which is really bad.

Testing is done in this way:

Client PC > Access Switch > Core Switch > FortiGate > ISP > Internet

Anybody has some ideas ?

[kancasu5]

Yeah, I had that argument with the Spectrum installer in January when they installed the service. Honestly, I am unable to confirm that they did it properly as it took him at least 4 phones calls with his own support to get the modem working properly. But, we did not have this slow speed until recently.