hi dan i get this line

;"Thread HashMasher-3 could not immediately reserve a core, it may experience decayed performance.
Thread HashMasher-4 could not immediately reserve a core, as there are no more cores to assign to. If performance is degraded, attempt with fewer hashers."


when i start the miner my cpu is intel core i5 3320m it's meant to be 4 cores.
is this message an issue or shall i ignore it.

cheers