I had tested version 2018 and I had the same problems with you. Version 2019 except that it uses a lot of ram it does not delay the start of the computer and the applications. For total security is very lite. And the other bad thing is the web filtering not support the Opera browserBitdefender is still heavy for me because of so high RAM Usage, when i installed giveaway version, i had problems with log in because interface didn't wanted show up. BD is full of glitches.