This is a known issue and has to with D+ writing the complete rule set to the registry which can get fairly large over time.
So far only a fresh install helps, which will get rid of old and unused rules. After that fresh install use “Treat as: Trusted Application” more often which should result in fewer rules.
Also try purging your rules list if you don’t want to do a fresh install.
I’m also very unhappy that Comodo hasn’t fixed that problem yet.
Did you uninstall the old version first? Usually it’s feeling very snappy in the beginning when the ruleset is empty and getting slower over time.
If you installed over the old version, your settings (and rules) are kept.
Try CSC (Comodo System Cleaner) instead of CCleaner, as hopefully the Comodo people know best how to remove remnants of their own software ;D
But honestly, I’m out of advice now 8). For me a fresh reinstall always fixed that problem (of course only temporarily).
Ever since upgrading to 4.0+ ‘remember my answer’ has been unbearable. Jumped from 1-2 seconds to 15+ seconds with the same config (on a Quad Core box with 12GB of RAM and an Intel X-25 SSD).
And no I don’t want to ‘Trust Applications’ or not have a lot of rules. That is the whole point of using Comodo, to have precise control over who does what, and phones home to whom. MS doesn’t need to phone home every time I start RDP, or launch WM Player. ‘Wiping your config’ is also the stock answer that wastes hours of my time and patience recreating rules that I’ve already created but Comodo is too slow to remember.
Absolutely the same inconvenience on a WinXP SP3 system. Upgraded from latest V3 to latest V4 and used CSC to clean after uninstall. Preserved all the rules and imported successfully yet everytime a new app wants something, CIS stalls for close to 10-15 seconds.
I have disabled Logging for both Firewall and Defense+, no difference.
Appreciate any ideas!
BTW, here is the Stack from Preocess Explorer that’s causing the 100% CPU usage after new answer: