While uninstalling Razer Synapse version 1.18.something, MBARW came up with a window warning that a Windows installer TMP file had been quarantined. The system became sluggish after that, slow to respond to mouse and keyboard input. After dismissing the warning window and waiting for a while for the system to respond again, MBARW was no longer running, and when restarting it, the quarantine window is empty.
Logs attached. I didn't take a screenshot of the file MBARW tried to quarantine, so I don't know where to find it. If the logs give a clue, I can go look for that file.
Malwarebytes Anti-Ransomware.zip
mbamlogs.zip