Hi all,
I recently got a brand new laptop with an eye to using it for drawing. It's a 15" Samsung Notebook 9 Pro, 16GB RAM, dedicated graphics, quadcore processor, running Windows 10... and Photoshop is pretty much unusable.
For instance, on a 1000x1000 pixel project @ 300dpi with a single layer, the brush lags soooo much. You can't even draw a single circle at medium speed without it lagging. Conversely, I have no problem even with many layers and larger projects on my 5 year old Macbook Pro (also 16GB RAM but a pretty outdated graphics & processor).
I did all the Windows Updates, all the driver updates for both my graphics cards, spent a couple hours fiddling with the performance preferences and comparing it to the settings on my Macbook Pro, tried all suggestions in this document up until the "fine tuning" section, have tried installing an older version... nothing helped. Since I use a Wacom Intuous with my Macbook Pro, I thought maybe the issue was the EMR pen (even though then pen works flawlessly with zero lag in Clip Studio, Autodesk, etc.) and connected my tablet to the Samsung and set it up with the newest drivers...same problem, extremely laggy.
If anyone has any ideas on what could be causing the issue, please let me know. Also definitely willing to provide any more information that could help diagnose the problem. Any help or suggestions are much appreciated. I've been trying to figure this out on my own for a couple weeks now to no avail and it is very frustrating. :[