Managing large Excel files in WPS Office can be challenging due to memory bottlenecks if not handled properly. To ensure efficiency and consistent performance, it is essential to follow a set of recommended guidelines tailored to WPS Spreadsheets. First, always save your file in the newer Excel format rather than the older legacy format. The newer format uses efficient storage and is much better at handling large datasets, which lowers disk footprint and accelerates opening.

Additionally, avoid embedding excessive styling such as too many fill colors, borders, or complex rule sets across huge data blocks, as these significantly slow down calculations and rendering.

Minimize the use of dynamic functions like OFFSET, especially in extensive ranges. These functions trigger on every edit, which can cause significant delays. Instead, opt for hardcoded entries where possible or use non-volatile alternatives.