Best old versoin of comodo firewall?

The new version of CIS is slowing stuff down for me. I’m looking for a recommended older version of comodo firewall.

You can get the older versions here : All versions of Comodo Internet Security for Windows -
Scroll down a bit you will see all old versions.

what version of comodo firewall would people recommend?

Of course the latest version. Comodo Firewall is developing product and people should use latest version. Latest version always has the latest prevention capabilities. If you do not like the latest release, just wait a little with the current version. Comodo will release a hotfix release. Then, maybe you will like it, maybe your problems will disappear in that hotfix build.

Hi fester779,
Is the slow down issue occurring when doing specific tasks?