Excel window lags when dragging it around

I have a work pc with i7 11th gen and 32gb ram but I noticed that when dragging an excel window its super laggy and make my CPU go nuts. I then searched online and decided to lower my mouse polling rate from 1000 to 125 and it stopped lagging. I have no problem having it at a 1000 on my main PC and I’m wondering why? I feel like the PC is fast enough to handle this but it doesnt seem like it. I have an addin on my work Excel which if deactivated it works well even at 1000. Something doesnt make sense. Is the addin the problem or just the polling rate on my mouse?