With the latest version it is a little bit better. But there must be an issue Ps 2019 vs pressure sensitivity of the Wacom tablet, I use the Intuos Pro S. Ich checked it between my iMac 5K and MBP13, using the same file, same brush settings. The Wacom driver is installed on both computers. Using the touch pad, the tablet disconnected, there is no issue on the MBP13. Using the magic mouse 2 or magic trackpad 2, the Tablet activated but not used, same file etc. - long story short: identical conditions except Wacom activated and connected to the driver - and by a brush all tablet pressure sensitivities deactivated - means using magic mouse or magic trackpad instead of tablet, even if connected, there it is: the lag on the iMac 5K, having a far better graphics card. But of course: absolutely no lag problems using Ps 2018, also not working with the tablet and Wacom pencil and the pressure sensitivity of Ps brush activated. That happens if companies (in this case Adobe and Wacom) do not communicate changes on major updates (CC 2019 is definitely no minor update).
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