I have just bought a new computer, here are the specs:
4GB DDR3 RAM; AMD Athlon X2 260 2.1 Ghz; Nvidia GeForce GT 220 1 GB
I have installed the newest Adobe Flash version and the HD videos on youtube (both 720p and 1080p) worked just fine on Windows 8. However, this is not the case under Windows XP. The HD videos on YouTube, Vimeo and on the other sites lag and it seems as if the CPU is at 100% (this is NOT because of the internet connection). I have tested a few HD videos on VLC Media Player and they work just fine.
Could it be because I'm using a 32-bit Windows XP OS on a 64-bit PC? Any ideas?