I'm running Quicken Premier R63.20 as a 32-bit app and it's gotten very slow. I'm hoping a 64-bit version would be faster. Is it available?
32 vs. 64 has only a minimal impact upon speed.
When are you experiencing this slowness? In any particular account (or type of account)? Doing any particular action?
Have you Validated your Q data file?
And, please hold down the CTRL key and click HELP, About Quicken. Then post a snapshot (graphics format please, not PDF) of the info you find there which might help us to diagnose your issue. We don't need the name/address stuff at the top of that dialog … just the statistics.
Also, see this thread for more info: https://community.quicken.com/discussion/7963002/what-determines-responsiveness-performance#latest