Hello,
In the end of May we upgraded our GW to R80.40 and patch it with JHF 48. We have all the blades enabled. Immediately we faced a problem with slow Internet browsing. We though that there was a problem with the ISP but that was not the case. The following log is observed every 2-3 minutes.

Also logs similar to this are also observed

Today we disabled Antibot and Antivirus blades and browsing works like a charm.
There are a lot of logs under /opt/CPsuite-R80.40/fw1/log/rad_events on the gateway saying something like rad_curl_task.cpp:103] CRadCurlTask::run: [ERROR] handle: 0x92dc768 curl_easy_perform() failed: Timeout was reached
GW is directly connected to Internet, no proxy
There is another thread with the same issue but still no fix is provided, except one with a radical decision to change the vendor.
Let me know if you faced the same issue and how to proceed.