Running reports during peak hours can cause report generation failures and increased runtimes because the system is already under heavy load, leading to slower performance and potential issues. Asking every team member to run and save a copy of the report can similarly strain system resources, as it multiplies the number of report generation tasks, thereby increasing the demand on the system and potentially causing failures or delays. Adjusting report parameters to include fewer elements or ensuring the use of scheduled reports are strategies to improve efficiency but do not directly cause failures or increased runtimes.