Performance Bug found
Testing the Wyse 3040 with OpenWrt 22.03.4 this morning and was puzzled why speed tests with or without VPN were slower than last night's results.
It transpires the monitor (on or off) has to be detectable while openwrt is booting up, otherwise the four cores seem to be stuck at around 480 MHz clock speed..... non-VPN speed test maxes out at less than 180 mbps.
With monitor detected during boot up, the subsequent non-VPN speed test returns full fibre speed of 500+ mbps. Some of the cores also seen to run at 1900 MHz during the openvpn speed test.
Plugging in a monitor AFTER Openwrt has started, does NOT restore full performance. The screen console also remains blank.
I've also observed if I go into BIOS and Disable Speedstep, this also seems to force the cores to stick at 480 MHz. ie. opposite of what is expected.
Installing a dummy plug headless ghost display emulator into one of the Display Port video sockets may be one workaround.
