- Ultima data activ
I did install Big Sur, and I am having problems with Bitdefender. I did reinstall it and doing a new full scan, but I can say the computer is extremely slow and Apple support blames it on Bitdefender. I have 2017 iMac 27 5K retina with 24 GB RAM and 2 TB SSD, so it is not a hardware problem. I hope Bitdefender acts fast!