Slow Video with WHDLoad Files

[CypherXG]

There is a problem with programs like demos or games with WHDLoad.
These are running slower than normal.
I use ClassicWB with WHDLoad.
In PAL High-Res Mode the WHDLoad games/demos runs fine, but when i use any Picasso Mode WHDLoad rund about only with a Speed about 80-90 Percent.
I think there is a Timing Problem with the Picasso Mode

Same with MOD playing. With Picasso Screen (any Resolution) MOD's runs slow. Without Picasso Mode all works perfectly.
Next Problem is switching from Picasso Mode in PAL Hires Mode for WHDLoad Demos, etc. There is a big black Border At the bottom of the screen. It cut ca. 20% from the Screen. Best way to test this: Run Red Sector Megademo or better Silents Xpose Demo.
When i start this demos in Hire Mode, there is no Black Border. All demos runs fine..