Flykite,
Win 10 Pro 64 Bit (Version 1803)
Sticky Password Manager (Latest Version)
Google Chrome Portable (from portableapps website)
You tried Sticky on Internet Explorer. The screenshot shows 2 Sticky Password processes.
Try Sticky on Chrome Portable. There should be 3 Sticky Password processes.
UPDATE
Sticky Password (32 bit) process uses high CPU.
Tried adding it, all the 3 processes, Sticky Password folder in Program Files (x86) in Excluded Paths and Excluded Applications, still high CPU.
UPDATE
It seems is not a browser related issue.
Started Sticky Password, Sticky Password (32 bit) process remains normal.
Started Sticky Password and Signed-In/Unlocked, Sticky Password (32 bit) process uses high CPU.
UPDATE
Tried with CFW and no such issue.
UPDATE
Tried disabling AV, Sandbox, Cloud and Heur Command-Line Analysis, still high CPU.
Tried adding Sticky Password (32 bit) process i.e stpass.exe in "Don't detect shellcode injections in these applications", CPU remains normal.
So adding stpass.exe in "Don't detect shellcode injections" fixes the issue.
By the way, "Don't detect shellcode injections" works even with AV, Sandbox, Cloud, etc disabled?