I was hoping some users who are far more experienced than I, could provide recommendations for improved throughput for a home license with 3concurrent users maximum and a cable modem connection of 180 down/30 up Mb/sec.
Speed was measured with a computer directly connected to the cable modem for a baseline. A variety of speed test sites were used, as well as uploading and downloading large files to servers with timed comparisons and performance monitoring in Windows.
I tried the current software UTM version 9 on a Core 2 Duo at 1.8 GHz with 2GB RAM and a 7200 rpm HD and found that with everything off (but the firewall/NAT) that throughput was good. However, after activating IPS for Windows system/Office/Malware, download speed dropped to the 50s. Adding Web filtering and single AV, dropped it to the 40s. The latency of speed tests jumped from the 10-20 msec range to 160-170 msec range as well.
I then repeated the test on different hardware with an i7 Ivy Bridge 3770K with 32 GB RAM and a 7200 rpm HD and found a good baseline with everything off, a drop to the 90s with IPS (as above), and further drop to the 80s with Web filtering and single AV. On this system, CPU utilization peaked at
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