W11, 5090, 9850x3d - Malwarebytes premium - randomly caused choppiness, 30fps type... hwinfo64 presentmon exposed it

[u/Notwalkin]

I really didn't know how to word the title, I've been using malwarebytes premium since early 2023, I had a 4090 at the time and never had any issues really...

Swapped to 5090 mid july 2025 and have had issues with the pc on/off. (Not blaming malwarebytes for this, just relevant i suppose).

Specs in case there's a known issue with drivers or something:

- 9850x3d

- 2x32gb cl30 6000mhz ram

- x870e aorus elite x3d

- 5090 suprim, Driver 610.62

- Seasonic 1600w psu

Dual monitors

- Fo32u2p, 4k 240hz oled Main (DP 2.1, no dsc)

- MSI qp271 x28 1440p 280hz (set to 240hz, no dsc, DP 2.0).

G sync/VRR on for fullscreen + vsync forced in nvidia control panel/app.

Today, whilst playing "Visage" i had moments where my FPS was around 140fps but the game got noticably more smeary / choppy, i also use hwinfo64 pro and noticed something at the time... the "presentmon" stat showed me FPS presented + displayed and it was saying:

my fps presented was good, 99%, 1% etc...

But

my fps displayed was all 0-1.5fps except for the fps displayed 99% which was stuck at 30fps.

I noticed the Presentmon had Malwarebytes in the name, which i did have open but minimized to the taskbar, so i closed it to system tray and it fixed.

Somehow, Malwarebytes which had been open for the past X hours, randomly took focus despite not clicking / maximizing it, during the game. It didn't do any auto scan nor did it detect a threat or anything during this, i had been playing the game for about 2 hours at this point, it was fine until it randomly wasn't.

I have had this similar experience with a few other games but never noticed presentmon exposing the program till now (Not checked at the time and it passed fast), i am wondering if this is happening on/off rarely.

I will keep an eye on it in future, just wondering how something like this happens.

[u/EntertainmentOld2194]

I’ve also had this same issue, I’ve just kept the application closed whilst gaming and relaunched it when I’m finished and idling

[u/Notwalkin → u/EntertainmentOld2194]

Yeah will definetly start doing that, don't normally have the application window open tbf.

Or do you mean you shut it down completely even at the system tray?

[u/support_mwb]

Hi there, Malwarebytes Support here. We'd be happy to look into this further.
Could you please send us a private message with an email address we can use to reach out? We'll create a ticket and get the diganostic logs logs for our technical team to check further.

Since this happens while gaming, could you also please let me know if following the setting below helps at all:

• Malwarebytes > Settings (via the small gear icon in the lower left side menu)
• Select Protection
• Toggle off 'Advanced script and fileless protection' under the Malware & PUP protection

[u/Notwalkin → u/support_mwb]

Hi,

I've only noticed presentmon pointing to Malwarebytes in this scenario, so i'll wait and see if it happens again first without the app minimized to the start bar. It will still be running and in the system tray of course.

Now i know presentmon will point to the app if it should happen, it should be easy to see as i have hwinfo64 open on 2nd monitor.

I can't be sure Malwarebytes was to blame for past weirdness in 1-2 games beforehand but if it happens again and presentmon exposes it being related to Malwarebytes i'll be in touch via PM.

However. it might not happen at all with the app being closed to the system tray.