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Thanks, but it seems, that you didn't read my comment carefully enough.
I wrote, that using third setting my monitor, well, shows the messages, just OS stops boot process at some particular point. And no: removing "@60" didn't help. As I wrote: I tried Icaros also with the other monitor - which hadn't problems with the frenquencies - and Icaros didn't work there neither.
Anyway IMHO the default settings shouldn't be set to such demanding values, that without reading some manuals it's not possible to take a look at what Icaros offers. Quite opposite: it should have settings "easy for everyone" (well, for the most, at least...), and when one needs something more sophisticated, in such case - after the lecture of manuals etc. - he can change some command-line parameters, selecting higher frequency this way (or whatever).