https://bugs.winehq.org/show_bug.cgi?id=51561
--- Comment #8 from C. Leu kle@bluewin.ch --- Great news, the lag regarding the gdiplus.dll file is no longer present on Wine 8.15 devel! :-)
Unfortunately there exist a new regression. I can confirm that it is not possible to install Paint.NET 3.5.11 under Wine 8.15 devel. It looks that this problem is present since some time and most likely it affects also Wine 8.14 and earlier.
But the installation works fine in Wine 8.0.2 stable. So this was the solution in my case. I have simply installed Paint.NET 3.5.11 under Wine stable. Then I have copied over the whole prefix to my newer computer and upgraded it to Wine 8.15 devel. This worked perfectly well.
As mentioned, the lag regarding the gdiplus.dll file is no longer present. But according to my first testing Paint.NET runs less stable. Unlike to the previous situation with the "lagging operation", the program is sometimes crashing. This behavior is very similar to the case when the native gdiplus.dll file is used. So while the performance of the built-in gdiplus.dll is now on par with the native one, the stability has gotten worse.
@Bartosz Should I now close this issue here? I can open a new one which explicitly targets the crash of Paint.NET 3.5.11 with the built-in gdiplus.dll.