okay, i have now started my 3 gekko compac f miner with the following command:
./cgminer -o stratum+tcp://de.kano.is:3333 -u cryptocygan.worker -p x --suggest-diff 442 --gekko-mine2 --gekko-tune2 60 --gekko-compacf-freq 555 --gekko-start-freq 555
i am now curious how long all 3 miners will run at this mhz

0: GSF 10051796: BM1397:01+ 555.00MHz T:555 P:547 (5:12) | 100% WU:100% | 316.0G / 335.4Gh/s WU:4684.9/m
1: GSF 10051622: BM1397:01+ 555.00MHz T:555 P:528 (5:12) | 71.8% WU: 67% | 181.4G / 195.0Gh/s WU:2724.8/m
2: GSF 10051619: BM1397:01+ 555.00MHz T:555 P:0 (5:12) | 100% WU:100% | 395.6G / 400.5Gh/s WU:5602.4/m
edit: did not take long and the first miner was disabled

[2022-08-29 17:22:24.488] GSF 1 failure, disabling!
[2022-08-29 17:22:24.492] 1: GSF 1 - usb failure (-9)
[2022-08-29 17:22:31.153] 3: GSF 3 - CompacF Bitcoin Miner (10051622)
[2022-08-29 17:22:31.153] Hotplug: GekkoScience added GSF 3
for simple run, try don't want --gekko-mine2 --gekko-tune2 60, to see how it is going?
or try to use 525 or 500.
if 1622 stick alway got lower Gh/s, try to adjust that screw. If still fail, which mean that stick is not good. Quality problem.
Another way, edit code, increse waiting time in read usb command, use 100 ms instead of 10 ms. This is often cause usb read not work correctly.