Moved to Forticlient. Very slow when PC is downloading anything

[mazbii]

We've moved a bunch of PC's from Anyconnect to Fortclient which has gone well however the big thing we've noticed is that if a host is downloading/streaming something then the Forticlient is affected quite badly.

So for example we use Forticlient to connect to our office and then RDP to a desktop machine on a private IP 192.168.1.1 for example. If I do a constant ping to 192.168.1.1 then the responses are fine. If I download anything then the response times climb so high as to be unuseable. It's only traffic to the 192.168.1.0/24 network which goes across the SSL-VPN. Any other traffic uses the home internet circuit gateway.

Normally I'd be 'yea, this is fine, you are using all the bandwidth' but this doesn't happen with Anyconnect at all. It's like the Forticlient isn't splitting off some bandwidth to stay stable where as Anyconnect is?

Is there a way to make Forticlient more stable if the host is using banwidth. I feel silly asking it as instintively I would say no of course not, tell your users to stop downloading when connected but again. They don't have this issue on Anyconnect.

[miciti]

You can try using DTLS and see if it makes a difference:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Using-DTLS-to-improve-SSL-VPN-performance/...

[SonaMuvv]

Hello,

If the issue still persists, Kindly check the below settings as well from the Fortigate side.

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-SSL-VPN-slow-file-transfer-issue/ta-...