Llohr

I'm underwhelmed with the 1070 right now, hoping for the next gen to bring a massive performance boost to power a 3440x1440 120hz monitor. Triple-A games tend to run under 60fps at that resolution ?

I do, but I don't have to load any sessions or packages for this effect. I can simply start CMUD and, with nothing loaded, my text input lags. If it matters, I'm running Windows 10 pro, and I got the April Update at the same time as the Malwarebytes update, and have verified with other users that the April Update alone causes no problems, in addition to having verified that it's specifically ransomware protection that causes the issue. Further tech specs, if it matters: Xeon E3-1240 v5, 32GB ECC RAM, GTX 1070 (most recent driver update: 12/20/2017).

I had not tried excluding the folder, but I have now, to no effect.

I should also note that adding an exclusion for CMUD in Malwarebytes has no effect on text input speed.

Ahh I must have missed your edit. This program is a telnet client, rather than a text editor. It doesn't create temp files. It does have predictive text and a command history. With predictive text, I can type a letter or two and right arrow (or tab) to get suggestions based on what's it the output buffer and some predefined set of common words/commands. Command history allows me to scroll back through my previous commands, which I can choose via an option to save across multiple sessions (I do not). I can turn off this "smart command line," but that has no affect on the text input speed.

That's alright, I appreciate the attempt.

Yes, I have watched the CPU utilization while typing. I have tried it with all other programs turned off except for Malwarebytes. There is absolutely no change to text input speed under any circumstances, up to and including re-encoding a video at max CPU utilization. The only thing that affects the speed at which text appears on the command line is turning ransomware protection on and off (and, obviously, any other action which has the affect of turning ransomware protection off). It's like flipping a switch.

The only program I've noticed it in is one called CMUD.

CPU is practically idle. Yes, the application is updated. I've certain never had to *reboot my PC* to update definitions.

Support tool logs attached. mbst-grab-results.zip

So, when last I shut my PC down, before leaving for a week, I gave Malwarebytes permission to update. Upon my return, I booted it up and completed the installation. Now, when using one of the most commonly used programs on my PC, my text input slows to a crawl. For example, I can type out, "What the hell is going on here?" in about three seconds. Then I wait for a further ten seconds while each letter is slowly added to the command line. If I quit Malwarebytes (via right-click in the system tray/notification area), text input speed returns to normal, and it slows again if I restart Malwarebytes. Further testing revealed that if I only turn off Ransomware Protection, input speed returns to normal.