In order to play videos nice and smooth program attempts to use graphics card’s hardware acceleration. To check whether it uses acceleration press o key:
Program can automatically detect hardware acceleration abilities for Nvidia and AMD cards. But for some (mostly integrated) Intel graphics cards it can’t. However, you can try to force usage of hardware acceleration:
Control Panel -> System -> Advanced system settings -> Environment Variables -> System variables -> New ->
Variable name: J2D_D3D_NO_HWCHECK
Variable value: true
Then restart program.
UPDATE (v1.1.2): Added start_force_hwa.cmd into program’s directory. It’s alternative way to start Perfect Player with hardware acceleration forced.