1862mhz any Erista can do it, the corruption can happen at any frequency cause it depends more of the voltage used and ram timings Vs frequency. Erista starts getting hard is usually above 1996mhz and too much MHz with low voltage might corrupt but not very usual, the worse is bad timings...
Mine is currently at 2169mhz with tight timings but I have memory coolers and have a lot of over voltage 1.3125v which I don't recommend but my mum's suck, some lucky ppl can do 2131mhz with even less than 1.175v, mine needs 1.25+v.
Ps: just have a backup of Ur latest emunand and do it only in emunand, if it corrupts 0 problems, just copy paste the backup of the good emunand back to the mSD...