No, you are not the only one with this feeling.
For example, if you look at https://steemd.com/@anyx, you'll see that @anyx upvotes often at 1%. A few upvote at 10-12% with the very occasional one at 25%.
While 4 days ago, @anyx was upvoting often at 100% and rarely below 27%.
Surprised you noticed so quick! :D I'm actually completely overhauling my voting strategy -- I was previously voting to maximize curation rewards, but after gaining a large trail, I'm finding that the influence I have is better spent on spreading rewards out to more deserving people. I'll be writing a post on this sometime soon.
Don't be surprised! I am a spy (according to my children's friends) and you are one of my favorite target!
;-)