biofuel radar draws higher than 10%

Less than two minutes after killing the local bear, turned on biofuel radar for first time: Got 1 bear immediately, a boar before the bear was dead, a wolf before the boar could be killed, and then a second bear while fighting the wolf and boar. If that is a 10% increase, I will never use the electric radar, let alone the workshop one. Avalanche on hard if that matters. I've never drawn 2 bears, especially after already killing another and I play hard since that change a few weeks ago. Had to abandon the prospect due killed by second drawn bear and down to 1 spawn.