Chrome 69 introduced a few changes, one of them apparently causes Window Snapping to break on some systems.
If you encounter this issue you should update to these betas of BetterSnapTool or BetterTouchTool. It would be great if you'd report whether they fix your issue, because unfortunately I haven't been able to reproduce it on my machines yet.
it will be in the Mac App Store in 0-3 days. You'll have to delete the beta, then download the update from the Mac App Store (free if you have purchased BST before)
im finding even with the beta using bettersnaptool on youtube on safari always lags snapping at top for full screen? is the final 1.9 gonna be same as beta
Even on the latest High Spec i9 2018 MacBook Pro it still lags snapping in safari im finding it worse with the beta 1.9 than 1.8? are you gonna fix it at all
maybe try to restart your Mac, Safari is snapping very smooth here. But in general the actual resizing is done by the snapped app, Bettersnaptool just tells the app how it should resize. This means it always depends on how fast the app responds to the Bettersnaptool commands.
Seems to be broken for me @ 10.13.6 + Chrome 70.0.3538.77 (64bit) but only when my chrome has an active tab with youtube playing in it. That one wont work, select any other tab and it will.
This has definitely been fixed quite a while ago. If you still experience issues with Chrome and window snapping it is probably a problem with some chrome extension.