goodnotes keeps messing up my wrting

can anyone tell me or help me on why this keeps happening. it keeps messing up my writing after like an hour, when i first start using goodnotes it works fine but after a while it starts glitching like this. at first i thought it was my pen because its not a brand apple pencil but i switched to reform to check and it works normally there. i even tried writing sloppily on reform but it doesnt do the glitch that happens on goodnotes. please someone help how do i fix it its so annoying 😭😭😭 i inserted a video so you guys can see what’s happening