Hi Romkavp ,
Thanks for the detailed post. Have you checked for an update of your GPU driver on Nvidia's website?
Most of the times GPU drivers and third party plugins do make apps unresponsive, Have you tried resetting Photoshop preferences to default Preferences in Photoshop and check if the problem persists?
Hi Akash. I have the same problem. both with a asus g550Jk, nvidia gtx850m, 16 RAM, HD 7200 rpm (2014) and a brand new Wacom Mobile Studio Pro 16, i5, nvidia quadro M600m, both fresh installs of windows 10
it happens more frequently with the latest versions of photoshop. 2017 being the worst offender, 2015.5 is the one I use more often due to the UHD support and hand gestures, and 2014 the more stable, but less usable on the tablet.
deactivated antivirus, running the latest drivers, reset Photoshop preferences as you said, and the problem persists. it's really annoying having to alt-tab every few inputs....
thanks for any suggestion
Turning off handwriting windows service will helps.
Control Panel\All Control Panel Items\Administrative Tools\services then find "touch keyboard and handwriting service" properties - startup type - disabled.