I am also having this problem, though not with ESET Cyber Security, but rather with ESET Endpoint Antivirus for Mac. We use this product for PCs in our office, but the one Mac we have also has EEA installed (the Mac version, of course) and is experiencing the same problems described by others. I finally removed ESET from the system and after a reboot it is back to normal. I'd much rather have it installed though than going with a different product for this system, so I'm anxiously awaiting a fix.
I am also having this problem, though not with ESET Cyber Security, but rather with ESET Endpoint Antivirus for Mac. We use this product for PCs in our office, but the one Mac we have also has EEA installed (the Mac version, of course) and is experiencing the same problems described by others. I finally removed ESET from the system and after a reboot it is back to normal. I'd much rather have it installed though than going with a different product for this system, so I'm anxiously awaiting a fix.