I am using Ccleaner for Mac 10.15.5 Catalina. It takes a full minute to load programme from dock then 35 seconds before
Analyse appears. This is often OK but the next stage is the real problem with constant crashing - last night it crashed 15 times before I could proceed. When it does crash it takes 30-45 seconds for reopen drop down to appear and about the same time to reopen and the whole ineffective process starts again. This has been going on ever since the last upgrade. I am considering another programme but will wait until I get responses in case I am doing something stupid.
Thank you all for your help.
ken