Utilizing sheets for a very simple budget record, simple column adds nothing with fancy overclocking  cpu utilization arithmetic . Yet just entering a  number in a cell,  prompts me to experience the very frequent "working"  notification. if this isn't bad enough, at time (not as frequent but very annoying) setting up a cell with "SUM" function ..non-responsive.  I cant say this has always been my experience... code changes??

now I've tried chrome, brave, Firefox browsers, all i have experience issue, nothing indicating a browser compatibility issue. Though i have entertained ... is google doing something to make my experience less desirable to have me return to Gdocs/sheet... that just a conspiracy theory.. just ignore   :-)