Ran into a similar incompatibility here. An STS computer that generally froze with LED bike lights, particularly in flash modes. After enough frustration gave up an got a newer Ant+ computer, a Bontrager Node 2.1. That computer works fine with both a Bontrager ION 700 headlight, a Blaze 2 watt headlight & a Cyglolight Hotshot taillight in any mode. (Am using Hr strap + DuoTrap speed/cadence sensors). Computer is mounted on the stem with a headlight on either side mounted to the bar.