"Do you have split mode turned on? Does it behave if split mode is turned off? Mike W9MDB"
Split was "Rig". No obvious difference with Split "None". Hang was not associated with crossing a 500 Hz boundary. Wide Graph hang can also be induced if the TX cursor is repeatedly moved within a 500 Hz segment with <shift><left click> but it seems to be less obtrusive than for mouse movement, perhaps because of the change rate. 73, Andy, k3wyc
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