I'm using Goodnotes 6 on MacOS and do my handwritten input with an external graphic tablet.

When using the app for an extended period of time, the written input appears with a major delay. This is fixed by restarting my Laptop or force quitting the app (might be a cache problem?).

Another issue is that keyboard shortcuts don't immediately work when opening a new document or adding a new flash card. This is fixed after using the "change size" option of the lasso tool once on the new document/flash card. (Maybe a flag is false by default?)

Both of these issues slow down working immensely.
Both Bugs have existed for multiple past versions.