Bitdefender high memory usage

Hello @Louis1013,

Although bdservicehost is designed to operate efficiently, some users have encountered higher than expected CPU and memory usage and we have seen threads on this topic in the community before. But we must always take into consideration the user context. At first, it may seem that there's a problem and rightfully so, if the usage goes through the roof and the performance is affected, chances are something is not right or there is an incompatibility between the system and the antivirus. But before making any assumptions, there is always a checklist to follow and @Gjoksi suggested the relevant article for this.

Sometimes, even adjusting the scanning options can make a huge difference. For example, you could schedule scans during periods of low computer usage or decrease the scanning frequency. Otherwise, if the antivirus is scanning the whole device whenever you have 20 tabs open and you are also streaming, writing emails and working in photoshop, surely you will notice a decrease in performance. Setting exclusions can also help, if the problem appears only when using a certain program or when compiling software into a particular directory, etc. add those specific apps and the folders they are accessing to the exceptions list in Bitdefender.

So, whenever we notice that we get high CPU or RAM usage in conjuction with the antivirus, we might be inclined to believe that there's something wrong with the antivirus itself, without taking into account what else is happening on the device that may result in this high consumption. Obviously, the developers wouldn't create a software that is hogging resources and any vendor would get tens of thousands of complaints if that was to happen, but there is a general consensus that after installing a security software, the computer will slightly slow down, which to a certain degree is normal. It is whenever this usage exceeds certain limits that we must ask ourselves what is causing the high resource consumption and there can be numerous reasons, as the support article on this topic explains.

Keep in mind that in such scenarios the context is very important and apart from the basic remediation steps that we can provide here on the forum, such reports require a case-by-case investigation. I'll give you two very recent examples, out of the similar reports collected by the Support teams.

One user mentioned that the issue disappears when turning off Bitdefender Anti-Tracker Chrome extension. Whenever he turns it back on, the issue reappears.

Another user told our engineers that the issue disappears while the device is disconnected from the internet. The issue turned out to be related to a Realtek network card driver. Installing the latest driver immediately rectified the issue.

And there are really more cases that show us the importance of the device status, running apps, drivers, updates, usage scenario, clogged or misconfigured devices and the list goes on.

My recommendation would be to go through the steps described in this article:

And if the behavior persists, contact the Technical support teams for further guidance, as they can help you find out what is causing the memory usage and provide additional remediation steps.

I hope the information is helpful.

Regards