[boo]

i've installed CS on my new PC yestorday and got some new big brushes to find out its really laggy with those brushes


how would i fix this?

it didn't happen on windows 2k?

[mac_mogul]

All versions of Photoshop are laggy when you use a large brush. Especially if the brush encorporates effects like size, texture, etc.
What OS is your new computer running? How much ram do you have? Were you using any other application while using Photoshop?

These could have something to do with it, but either way, Photoshop will lag with large brushes.

[boo]

it didn't lag with my old PC

old PC = same brushes