Extremely slow internet over wlan after port forwarding

[cpucpu]

I have a PC configured as "DHCP>Static IPs".
Then I set it up as "Firewall>Individual Port Forwarding".

After a couple of days, Internet over wlan became extemely slow on that only PC. I did not tried wired LAN. I said "slow internet over LAN", because that PC was serving pages locally at several ports over WLAN blazing fast. And the configuration portal was loading fine too.

I had no idea what it was. I tried a lot of stuff. It all came down to, what configurations do I have under gargoyle that are particular to this device?

Removed port forwarding config, and now everything is normal.

[ispyisail]

4MB router?

[cpucpu]

Don't think so, C7 v2.

Port forwarding is not something i use frequently, but I wanted to report the issue.

[ispyisail]

screen shots please

[cpucpu]