It's relatively subtle, but the issue I'm experiencing is specific to the text in the pinned section (after video is off screen and during the length of the pin with scrollTrigger). I tested in both latest chrome and safari. when blend mode is being used, the text in the pinned section appears to be much choppier when the pinned section is being scrolled (especially when smoothScroller is "smoothing," like the smooth after the scroll is finished but the plugin is smoothing the end-- not sure how best to phrase that but hopefully that makes sense). when smoothScroll is deactivated, the pinned text seems to pin or "stick" better without the chops (these chops im referring to feel like endless tiny microadjustments on the Y axis or position adjustments during scroll, it doesn't feel smooth).
When commenting out the blend mode, the pinned section feels perfectly smooth on scroll, or "sticks" perfectly on scroll. I recognize blend mode is challenging but it seems strange that this behavior is especially prominent with smoothScroll enabled vs disabled.
Again, hope I articulated the issue I'm seeing well enough. It is a bit subtle but noticeable especially when viewed on larger screens in codepen.