I've used Kaspersky and every time I have issues with my computer. For starters, the 2019 version made my keyboard not work right. Kaspersky 2020 made my internet stop working and made it act like a vpn. Bitdefender has some issues however that I do not like( blocking the printer at default for starters), but Kaspersky engine is buggy and I do not care if kaspersky is slightly better in some situations because they have better signatures, Bitdefender has the superior engine that is less buggy. If your computer is not a potato, Bitdefender will run just fine with no lag.
