I was running Kapersky Total Security on my new PC under Windows 10 Pro version 1903 and was getting terrible keyboard lag where I’d type several words without anything happening and then the whole text would appear on screen at the same time. In addition when scrolling using the mouse wheel the system would stop moving for several seconds before suddenly jumping to catch up wtih where it should have scrolled to.
My initial though was that it was a kown problem with my wirless keyboard and mouse but swapping to wired devices had no effect and I could not identify any links to the software I was running at the time, other than Kapersky which was always running. I then disabled Kapersky and reverted to Windows Defendet and the problem was totally cured, at the cost of reducing my systems security.
Anyone got any ideas for a cure? Kapersky is still running fine on my two older PCs and a couple of Android devices so I really do not want to give it up but it is unusable on my new PC.