Trouble dragging my mouse across multiple keframes

Hey, I've noticed ive recently had trouble using my mouse to select multiple frames. Usually if i want to transfer many frames at once i click and drag to select multiple frame and it works great. But over the last two days this aspect seems to be bugging out. LIke if i drag vertically to select frames it'll end up selecting and dragging the first few frames i scroll over before i let go. Anyone else notice any issues with this aspect lately?