I just installed later version of CIS. I downloaded it from downloads.Comodo.com at full speed (1 MB/s), because at EU servers i have 5-10 KB/s (i connecting from EU).
After installation, AV started first update. After 2,5h super speed 0-5 KB/s, i cancel updating and download definition base from america servers at 1 MB/s and manually change it in system.
Question: Is any way to block in CIS european servers?
I don’t think you can exclude a server, but you can force updates to a specific server by adding prefix to download link.
Try to add us3.download.comodo.com under update options.
Just be aware that you might have problems if / when the specific server is not working / updated, as well as messing with the load balance. If everyone chooses the same server it might not be that fast anymore.
Yes, it isn’t recommended to use this method. The load balancer is there a reason. If users choose to bypass the load balancer, it may cause the developers to remove user selection of download servers.