HoMM3 HD - Releases and updates.

3.811 build 3 -> 3.811 build 4 (19.10.2015)
[-] Fixed a critical bug when clicking on a unit with the mouse in tactical mode in a multiplayer game.
[-] Fixed a bug that reduced the performance of Scale2x, UltraSaI, xBRZ filters on multi-core processors.
[ ] In 32-bit True (stretchable) mode, the GDI Bilinear SharperX3 filter has been replaced with Bilinear SharperX2 (M) - a faster (for multi-core processors) implementation of Bilinear SharperX2.
[-] Fixed a critical bug when saving the game if the map does not have a name.
[ ] Graphics fixes by Docent Picolan (backpack button, backpack background, exchange window)
[ ] Minor fixes.

CPU: Core i7 3610QM 2.3-3.1 GHz x4 (HT)
Graphics.Threads >= 8
Original image size 830x664
Original performance: 129 FPS

Stretching to 1280x1024 with 32-bit True (stretchable) GDI (3.811 build 3 -> 3.811 build 4):
Bilinear SharperX2: 51 -> 51 FPS
Scale2x + Bilinear Sharper: 35 -> 69 FPS
UltraSaI + Bilinear Sharper(Q): 22 -> 56 FPS
xBRZ + Bilinear Sharper(Q): 17 -> 50 FPS
xBRZ + Bicubic(Q): 5 -> 38 FPS
New Bilinear SharperX2 (M): 82 FPS

***

CPU: Intel Celeron 1005M 1.9GHz x2 (HT)
Graphics.Threads >= 8
Original image size 1181x664
Original performance: 60 FPS

Stretching to 1366x768 with 32-bit True (stretchable) GDI (3.811 build 4):
Bilinear SharperX2: 30 FPS
New Bilinear SharperX2 (M): 40 FPS

Indeed, there is a problem.
I finally figured out what it is.
In the latest HD version 3.811 build 4, the multiplayer game is not compatible with previous versions.
If you play 3.811 build 4 vs 3.811 build 4, everything is fine, but if you play against earlier versions, both will receive incorrect data from each other.

I will release a fixed version within the next 24 hours.