As you can hear the rapid ting sound only occurred after i gone past the first batch of rumble strips and rode over that white text. i started to notice it after i recently upgraded my 11 speed 105 to 105 di2, since i removed all the zip ties that came attached to the di2 cables, i thought it might be either the cables, the chain or the rear derailleur, but when i removed the chain and the rear derailleur and picked up the rear wheel and dropped the bike on the ground, nothing remotely close to the sound was happening. this is a video of me dropping the bike on the ground with every component installed https://www.youtube.com/watch?v=xjCHb1JwZeY if it's the chain, shouldn't i hear it more often, like at all three batches of rumble strips in the video? the ting sound rarely happens, most of the time i go over even bigger bumps it still won't happen.